should i be here so she has to feel the guilt of taking the rest of her things?
to me it feels like the guilt is the only thing she is battling right now. and idk what will happen as soon as she stops feeling guilty.
Guilt usually doesn't work in the LBH's favor.
Taking her father along sounds, to me, as if she's using him as her support person. So, if you were to start in on her, he'd be there to shield her, so to speak.
IMHO, I think it would be best not to be there. A couple of reasons: It will tend to be very emotional for you, especially if you're watching her to see any signs of guilt or second thoughts to what she's doing. Her father will probably be playing watch dog, so that makes for a lot of extra tension between you two males. She will certainly have her guard up, which means she will appear to be angry....even if she sheds tears.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!