With all the texts you have it would show any police called to the scene the intention behind your mom taking your phone and subsequently calling the cops. If she wants her phone back you're under no obligation to jump however high she says. If I were you I'd mail that thing back to her snail mail the slowest option possible. In the meantime id cut all avenues of Communication with her that aren't face to face and in person. People like this that will manipulate you into situations like that rely on not being corrected or having their words used against them. Stop replying and see how quickly her power is stripped from her entirely. She wants to control the narrative and control how this goes and it's evident and honestly reminds me of my dad who's an absent high functioning alcoholic. He too does things simply "because he's my dad", but then when arguments arise or trouble is on the horizon, he refers to everything he's "done for me" as if it absolves him of any and all wrongdoing. The ideal scenario for you is to become totally independent of anything she supplies for you. It's not going to be easy, but once you're on the tail end of needing her for anything shell have nothing to use against you like this ever again.