My mom has BPD and I noticed she has a very good ability to act. Its like she calculates everything from body language to timing of words &amp; all that so well it goes over my head sometimes.. 

it’s weird like she can control her emotions suddenly when she does but other times she presents quiet BPD. 

and even when she feels like I abandoned her, she doesn’t seem to get frantic . She just calculates how to make sure I get back talking to her, usually  by trying to provoke positive emotions in me . And 9/10 times it works ... very calculated exploitative behavior. 

I wanted to know if anyone else has that experience or could this possibly be a comorbidity .?