Welcome and hello

17 years is a long time, and your son's wish for his mom to be better really broke my heart to hear. It's not easy for family members to watch our loved ones deal with BPD, much less our own challenges on these emotional roller coasters.
What do you think the therapist means by serious condition of BPD. By that, do you mean that she engages in self harm or suicidal ideation/attempts? Anything happen this year to trigger a jump in severity?
We're here to walk with you, and there are a lot of lessons, skills resources, and support here anytime you need some ears to listen. You may also find local support through NAMI (national association of mental illness). They sometimes have local groups, though not always specific to BPD.
https://www.nami.org/