Hope you’re taking that threat seriously. Document it with a notarized letter and give copies to trusted family members. Given that your niece is a leftist nut case, I’ll bet she’s bragged to more than a few of her pals how she shut you down. Any one of them could easily make the call too.
I have removed her from ‘immediate family’, spoke with her father too.
Funny, her dad owns the safe my ‘overflow’ rifles end up in.
Don’t get me started on the boating accident...
She had a California education.