Monster -
(first of all, you are not a monster. Your feelings of guilt are completely normal, and I respect those feelings. They are real, and they do not define you.)
I have felt those precise feelings as well. I understand the guilt. The hopelessness. The powerlessness, and the worry that you not doing what your BPD child "wants" is going to cause a blow-up, or in my case, self-harm. I get it.
Below is a set of questions I am asking, not to be difficult or mean or say you're doing anything wrong. You handle your situation the best you know how. I ask because I would like to have you see this in a different light. This light is not better nor worse, just different, so consider:
I don't know why I'm worried... .we seem to have plenty of contact. Sarcasm. She called four times before 8 a.m. this morning, as well as long phone calls every night. In the last two weeks, we have been plenty involved.
Like another poster said, far be it for me to suggest you cut off your child. I do need to ask... .
We paid $2000 to the building where she works because she ran into a wall. Her car was just repaired and is now damaged again.
Why did you pay, if she has a well-paying job? Did you run into the wall and damage the car?
She thinks she will be fired from her well-paying job so we will end up helping her financially.
Why is that your responsibility, to help her if she gets fired from the well-paying job? Did you get her fired?
We pay for her therapy
Does she not have insurance, or can she not afford it from her job?
I just paid $600+ for her cat's surgery.
Why did you pay for the surgery?
And she received a letter from an attorney that she has slandered someone.
Why is this your problem? Did you slander someone?
So, these questions are difficult, and I understand the difficulty in answering them in any other way than "because this is my child". I totally understand that answer, and it is incumbent upon you to understand that you are not your child. She makes her own decisions. Those decisions have consequences, like driving into a wall. Like having a pet may cost money. That slandering someone may be costly in court. Like therapy and meds cost money. Like decisions she makes may cost her her job.
You didn't do any of those things. She did.
Take this or leave it, or any part of it that speaks to you. Please keep in mind that I am not perfect - far from it. My PBD 19 year old just self harmed last week, while she is in residential treatment, so my advice may be pure bunk.
But, I had to come to the conclusion that she cut herself. I didn't. And while I feel bad that she did it, I didn't break the glass and slash her arm.
See my point?
Welcome here. It is a fine place for people like us. In fact, the place is FULL of "us". We understand. Come early. Come often. Take what you need, and leave what you don't.
We're here.
You are not alone.
-jyw