W is simply acting out like a petulant child because you didn't rescue her.
And, perhaps, because you did that rather manipulative -- I get the kid if I pay for the haircut thing. Not pretty. Better to wait until he was with you.
But, mostly I think she's just acting out. She's pissed at you. She's pissed that she's likely questioning her own choices. So, she's making threats.
I promise you, it is NOT about making your life better in any shape or form.
And, you've chosen the right course. Ignore it.
When she files, let your L handle ALL communication. Just trust me on this.
