I wonder if Bianca had anything other than BPD.
I assume she may have also had Bipolar disorder. Her mother said once that her mood shifted very easily. Specifically saying she would be happy one second, drop a plate, and then immediately break down and burst into tears. She was also prescribed Lamictal at one point, according to her tumblr posts, and that medicine is used to treat Bipolar.
It is common for those with BPD to also have Bipolar.
I kn̈ow she did not have autism, but she once claimed to have it.