If a LTR of 2.5 years who you have co-habitated with (yes, I broke Iron Rule #4 but that was before I found TRP) moves out because she can no longer handle the disrespectful behaviour of your teenage daughter, does she become a plate or something else?

I can't help feeling like I'm in the middle of a massive shit test. Feel free to be merciless with me, I think it is the way I will learn the most. I have a feeling I may be seen as 'Once BB, always BB' by this person, as I've been a stand up solo dad for ten years after the dreaded DR.