Hi all,

So I started dating my current girlfriend about 3 months ago. She's really wonderful and we really connect really. The main issue is (not really an issue but more of a struggle), I think she might have BPD. She has told me that when she was younger she was seeing a counselor who had diagnosed her with it, but she stopped seeing her counselor and since then hasn't received any kind of therapy. She doesn't think she has it, but I've been doing my due diligence and I can see some connections between what I've been reading online and her behavior.

Tonight has been the main thing that has made me want to reach out and ask for any advice. I am a Music Student (I play the piano) and since the end of the semester is approaching I am working very hard on some pieces I have for my recital. I had been telling her how I needed to practice tonight and that I've been really stressed out trying to get the pieces in good enough shape. She had told me that it's okay and that she didn't expect to hear from me that much, we've even been talking throughout the day whenever we've had free time (we normally talk at night since we're both busy people). 

On my way home from being at a friend's house I had called her and we talked for like 15 minutes before I got home and had to go. I got inside and showered, then sat down to start practicing. She texted me a few times during this period and I texted her back. I took a bit of a break to text her a little more and we were talking about doing something when I was done. All of a sudden she switched up on me and started acting as if I had slighted her. When I asked her about it she was upset that I didn't text her after I had showered. She thought I was ignoring her and that I wasn't going to text her. I tried talking to her about it and she just kind of shut down; responding to my texts with "Ok", telling me she was going to bed (she typically stays up later), and telling me she was done talking to me. She was totally fine beforehand so it was shocking to me that all of a sudden she seemed really upset that I hadn't texted her when she knew very well that I had a lot on my mind and that I had to practice. On top of that, we had JUST talked on the phone and I told her again that I was going to be busy. I tried getting her to talk to me to no avail, and then I relented and told her that if she wanted to talk that I was a phone call away.

This kind of stuff happens pretty regularly and it's impossible to come to any kind of solution until she finally decides to talk to me, and it usually ends with me apologizing for something I didn't actually do (or don't feel like I did). Is there anyone here that has any tips that can help me navigate these situations? I don't want to break up with her because she's really amazing and I love her to death, but it feels like at any moment I could do something completely unintentionally and her mood will flip.