It is indeed a tragedy and injustice that many people who suffer from borderline personality disorder (BPD), a condition which can inflict excruciating mental pain on the suffer (10℅ eventually kill themselves), are not only not helped by others, but blamed for the symptoms they display as a result of their illness.
This can result in complete rejection from family and friends, and I state this with the benefit (if that’s the word we’re looking for) of my own bitter experience. Their lack of knowledge, understanding and imagination can lead them (family and friends) to view the BPD sufferer as having a flawed character rather than accept s/he is genuinely, and seriously, ill.
Of course, if one’s family has contributed to one’s illness (there is a strong association between childhood trauma and the later development of BPD) it can very much suit them to blame the sufferer rather than to face up to their own culpability for reasons that are far too obvious to require elucidation from me.
To use an analogy, it’s rather like one’s family beating one to a pulp and then blaming one for bleeding over them and spoiling their clothes, is it not?