Hi Madhouse and welcome to the group -- we're glad you found us and are ready to get some support right now. Things do sound tumultuous, like you said, so getting some feedback and getting space to reflect will be helpful as you decide your path forward.
Just a few questions to help me understand things better:
I didn't see you mention kids, do you two have any?
Are you still seeing your therapist?
What was the timeline between her being arrested, and her returning to the home? Was it the same night? Was it by mutual agreement?
Are there still charges pending on her (I saw you mentioned the DA is involved)?
...
There are a lot of moving parts for you two right now, not only the legal side, but the emotional and relational side, too.
If BPD is in play, then when she says this:
I've asked if she wants to end the relationship - she will not say one way or the other. "I have no answers for you."
she may actually, weirdly, be telling it to you straight. BPD is a significant, serious, and impairing mental illness, and it most often shows up relationally (in behavior between the pwBPD and others). pwBPD often also have a weak or absent sense of self (of "me" who is an individual entity that can think, feel, do, experience cause & effect, etc). And, pwBPD typically have poor or few healthy coping skills to deal with times of high stress. So, it makes a lot of sense to me that a person who struggles to feel like a real individual, who is under stress (even though brought on by herself), and who doesn't really have healthy tools or skills, would respond with "I have no answers for you"...
I think she really doesn't.
The good news is that
you're here, and we can work with you to get clarity on your own thoughts and feelings. You get to chart a path forward without having to wait for her to gift you the clarity or closure that you want -- she probably can't do that, but fortunately, you get to act in line with your own desires and
values, anyway.
A path forward could look a lot of ways. People return to, and want to stay in, BPD relationships, for any number of reasons, and we support them here without judgment. If you're thinking of wanting to improve the relationship and remain in it, we'll be here for you. You may also find, after reflecting on your values and needs, that you may need to separate. That's also valid; no judgment there, either.
The most important thing is for you to get in touch with yourself. What do
you think? How do
you feel? What do
you want?
I think you'll find a lot more clarity there than with anyone else.
Fill us in some more, when you get a chance. And again,

kells76