Wow, such a familiar story and one of the main reasons I won't get into a relationship anymore.
You just don't know when they're going to lose the plot and go all out spiteful on your arse do ya ?
Let's hope 2019 is your year to pick yourself up and repair the damage caused.
I've always thought there should be legal repercussions for false allegations and denying access to children but there isn't so certain women feel that's a standard strategy to take. There's no deterrent.
It's so wrong on every level but karma will catch up with her, that is for sure.