Come to think of it my eldest DSD, now adult with her own child is like this. However it’s in small things not wild stories. No one suspects her except me. She lied about me, didn’t exactly say that I’d done anything in particular, however told everyone that I hated her. I’d done absolutely nothing however I just accepted that perhaps it was a hard adjustment, and made loads of effort to tell her I did like and would try and be a good SM.
Whilst pregnant she lied inexplicable to the doctors about conception dates and refused to have any tests so they did not know whether the child was low birth weight or premature when she was born.
Then her boyfriend and her split up, had a big custody battle and DH helped by paying her solicitor. He showed me her sworn testimony and in it she accused her Ex of quite a few nasty things, some very serious, such as: of making her pregnant by putting holes with pins in the condoms. Even though she had told me she had been on the pill when she got pregnant, (and not used condoms).
I just couldn’t work her out and stayed a bit clear if I’m honest. I just saw her at family events and her and DH had a pretty separate relationship which seemed her choice and I respected that.
Then things seemed to be fine, except for hearing on the distant grapevine that there had been big fallouts with other family members, and ‘lots of things said’.
And then before me and DH broke up, we had an argument and he then told me lots of things I’d supposedly done to DSD over the years. They were basically shockingly big lies about how awful I was. I was horrified! For example one time she called at the house and even though DH was out, I invited her in but she declined. DH told me she’d said that I’d closed the door in her face and left her crying in the doorway as I told her that “I just wanted to be with my ‘own’ children!”
That must have affected DHs opinion of me. I was pretty upset. DH just shut down when I tried to defend myself so I’ll never know who he believed.
I’ve never seen her since but I get very wary now if someone around me lies about smaller things a lot. Just in case they are so used to it they lie just to make their point!
So perhaps the moral of that tale is... take it seriously!