A second suspect has been charged in the stabbing death of a married lawyer at an upscale Washington D.C. hotel. Jamyra Gallmon of Washington was arrested last week and charged with first-degree murder while armed for allegedly killing David Messerschmitt, 30, on February 9 at the boutique Donovan Hotel. According to a police affidavit filed in court on Thursday, she stole just $40 and the victim's Metro SmarTrip card. Her roommate - and alleged girlfriend - 19-year-old Dominique Johnson was arrested on Wednesday and is accused of being an accomplice. Scroll down for video . Jamyra Gallmon, right, has been charged in the stabbing death of a lawyer at an upscale Washington hotel stole just $40 and the victim's Metro SmarTrip card, while Dominique Johnson, left, has been charged with conspiracy to commit armed robbery . She has been charged with conspiracy to commit armed robbery and made an initial appearance in D.C. Superior Court on Thursday during which she denied the charge against her. According to court documents, Johnson was charged because she knew Gallmon was going to rob Messerschmitt. She also allegedly accompanied Gallmon to CVS to buy the zip ties used to tie the victim up. According to documents, after Gallmon returned from the hotel, she told Johnson that the robbery 'went badly.' When Johnson was arrested on Wednesday, she had two Metro cards, including Messerschmitt's card which had been used on April 1. Gallmon has a court hearing scheduled for Friday, but that has now been rescheduled until May 8. She is being held without bond. The woman has admitted to police that she set up the lawyer using a masculine-sounding email address and went to the upscale hotel with the intention of robbing him. Gallmon, who was seen on surveillance camera entering the hotel wearing androgynous clothing, told detectives that the robbery went wrong when Messerschmitt grabbed her arm, causing a flashback to a time when she had been assaulted. The affidavit stated that the pair got into a struggle and the defendant pulled a knife from her pants and stabbed the victim repeatedly until he fell to the floor where she stabbed him several more times. The victim was found with multiple stab wounds to the back, groin and abdomen along with one wound which pierced his heart and another which hit his spinal cord. David Messerschmitt (pictured with his wife Kim) was found dead in his DC hotel room in February. An affidavit revealed that he had been soliciting sex from men through Craigslist . Gallmon was caught on surveillance video entering the hotel where Messerschmitt was killed on February 9 . His hands had been bound with zip-ties into a pair of makeshift cuffs. His hands were covered in defensive wounds. Her attorney asserted in court that it was a case of 'imperfect self-defense.' Court documents concerning a rent dispute confirm Gallmon and Johnson as roomates. About two weeks after Messerschmitt was killed, the two were ordered by a D.C. Superior Court judge to pay $1,860 in rent owed since January. A neighbor of the two women said he was surprised that they could be mixed up in such a crime. 'They were great neighbors. They never made much noise, nothing out of the ordinary. Great people,' Tony Johnson told WUSA9. He said he believed they were also lovers. Messerschmitt had texted his wife Kim Vuong at 7.45pm on February 9 to tell her he would be home in an hour after leaving his law office. He never returned and the next day he was found dead at his hotel room with 'various credit cards strewn about'. He death was declared a homicide. Jamyra Gallmon, 21, (pictured graduating from her military academy high school) has been charged with first-degree felony murder while armed for allegedly stabbing to death 30-year-old David Messerschmitt on February 9 . Among the items recovered from the room were a computer, lubricant, condoms, cell phone and enema kit. Fingerprints were also found in the room. Investigators discovered that Messerschmitt had posted a Craigslist ad on February 9, soliciting responses from other men, using 'dcguy456'. The lawyer began an exchange with an individual, using the name 'chrissanchez0906', around 2pm which continued throughout the day. Messerschmitt told the individual his room number at the hotel and gave a meeting time of 7pm - 7.30pm. The email address that the lawyer had been in contact with was linked to Gallmon. On a search of the woman's DC apartment, police found a knife, black boots and gloves, and a pack of zip ties. A discussion in the comments section of a Queerty.com article about Mr Messerschmitt's murder in February included users referencing interactions with an individual using the handle 'dcguy456'. One commenter said that 'dcguy456' had previously posted on the 'M4M' (men for men) section of Craigslist and identified himself as bisexual. On the left, another view of the security footage of Jamyra Gallmon at the Washington hotel and on the right, Messerschmitt . Emotional: Last month, Messerschmitt's wife, Kim Vuong, held a press conference, asking for help in locating her husband's killer . Another individual's post claimed that he had exchanged emails with 'dcguy456'and met up with him several years ago. Authorities have said they are searching for anyone else who may have e-mailed the account used by Gallmon — chrissanchez0906@yahoo.com — but have not said whether anyone has come forward. The new court documents do not say whether anyone else beside Messerschmitt was targeted. Last month, Messerchmitt's wife Kim Vuong gave an emotional speech, asking for help in finding her husband's killer. 'The world has lost a good person. David's family: a son and brother, and I have lost everything: my husband and my best friend. In one day, I lost the most important person in my life and the man I loved so much. And I have no answers,' she said. A Cincinnati native, Messerchmitt attended Ohio State University where he met his wife. He went on to study law at Boston University before working at a firm in Chicago. He then worked at two more firms in the D.C. area before transferring to DLA Piper last year, as a specialist in intellectual property law.
Dominique Johnson, 19, was arrested on Wednesday and has been charged with conspiracy to commit armed robbery . She is the roommate and alleged girlfriend of Jamyra Gallmon, 21, who last week was charged with first-degree murder . David Messerschmitt, 30, was stabbed to death on February 9 at the boutique Donovan Hotel in Washington D.C. Gallmon has admitted to police that she set up the lawyer so that he was expecting to meet a man for gay sex at the hotel . When she attempted to rob him they got into a struggle and she pulled a knife from her pants and stabbed him repeatedly .