she is not my mom.....

Not just violated, sounds like I would make a choice and not eat her food she is cooking :read2::read2:
and can she be trusted to be in you and your dad's home :-k keep an eye on little things missing that you take for granted that you have saved in your closets attic and or basement, I have seen and heard of this kind of thing happen disgust and I hope she would not do that to folks helping her out.
Just me :blackeye: I have been on the receiving end of a thief in the house putting on face :ncool::ncool:

Be real nice and smile at her 8)and just say no thank you.... and go on with your day :clock:

On the up side :happy3: sounds like she is helping around the house and means well. Just have hope that your dad has thing under control 8)