I have two kids of my own and a step daughter.
Recently my stepdaughter has been going home and telling her mum lies about what's been happening in our household. Basically saying my kid swears all the time and I let them away with it (they have autism and adhd) which I do not and saying her dad has said she can swear if she want again not the case. She also said I allow my kid (8) to Vape whenever he likes again definitely not true amongst other lies over the years.
Her mum has believed everything which comes out her mouth and has said I shouldn't be allowing this kind of behaviour and that my dh is a bad dad. When we told her about the things that my stepdaughter has told us (she's 7) in regards to periods, sex and going into great detail about how babies are born she said we were horrible for making up this kind of lies.
Anyway, I have told my DH that I now no longer feel comfortable about her coming to the house as I am worried about what else she may make up and lie about and that I have to protect myself and my kids (my job is such that I would be sacked if she made lies up which may involve SW or police) however, he said he understood but that was it and think he may want me to just forgive and forget AGAIN. I have suggested he take her to his mums (she would love this) but he's adamant hes not doing this. Im not sure what to do. We are both deeply hurt and disappointed and cannot for the life of us cannot see what she thought she is going to gain.
I should say we have had issues with his ex in the past. She expect him to jump when she says and when she found out we were getting married suggested he get his own place so there wouldn't be any issues with his DD.