All parsing of MrsT's motives aside .... please be very cautious. This reads to me like the second act of the incident in October, only much more serious and with the boot on the other foot. No matter how you slice it, this thing is escalating .... whether it has anything to do with you and/or your marriage is unclear to me. Given the situation with her mother, it may at least partly be a convenient (as in, familiar) vent hole.
Be that as it may, from my reading, when the cops are called to a house for domestic violence, the presumption of harm or threat often falls on the man. You drew lucky this time, and I am so relieved. But, depending on where this is going, I'd be really reluctant to stubbornly stay put to prove a point. Since her behavior seems to be breaking new ground. What's next??
Just sayin'.
(((Thinker)))
"Show me a completely smooth operation and I'll show you someone who's covering mistakes. Real boats rock." -- Frank Herbert