Cheating husband

So I let my best friend move in with me and my husband cause she needed a place to go so fast forward till today she’s acting fine asking for a ride to work in the group chat then after my husband leaves for work she comes and tells me that he asked to watch porn on her I pad cause I parent locked his phone as a prank and that she told him no then he asked about buying her nudes and then starts trying to get in bed with her and bites her neck and she told him know and gave him the iPad so he would go away.. he completely denies it other than asking for the iPad to watch porn.. she moved out today and I’m trying to get the full answer there story’s arnt marching up and I’m just confused on what to do.. she showed me a picture of the bite mark and it looks nothing like a bite mark.. she was being super nice to him and helped him pack (I wasn’t home) sent him money for dog food. When I was home she was still talking to him and just being odd about the situation. But she also lost everything as in a ride to work and a place to live.. I just don’t know

UPDATE!

I applied to Steve wilkos as a joke but they called back and want to move along in the process and will be calling me later today I asked my ex-husband and Ex-best friend she keeps finding diffrent reasons to say no and ended with a maybe but he was 100% willing to go.