Such bullshyt!
I doubt that person actually knew anything about BPD. Probably just read some questionable material on how hateful we all must be and decided "OMG that's my mom!"
I have my own struggles with motherhood, but none of it includes wishing my child died of cancer or treating her like absolute shyt
She's my life, my real live guardian angel, and even though I have to work exceptionally hard at being a good mother for her, she is absolutely worth the effort.