Controlling mom tracking me!!!

For background, I am 20 and a straight A college student studying to be a doctor.

My mom doesn't support this aspiration... My mom recently met my bf of nearly 9 months and a couple days later forced me to break up with him and then a few days after that to cut contact with him and then took my phone and computer and threatened to disown me and take my animals and block me from seeing younger siblings if I contacted this guy. She wouldn't let me go for a job interview that I worked very hard to score and I lost opportunity with the company because I was unable to contact them.... She found out I logged on to facebook at college and told me she was more disappointed in me than I will ever know and how ashamed she is of me etc. She then said that if I go on somewhere I can contact him she can and WILL find out and I will have no family and will be disowned and homeless and that she will send someone to beat him up and hopefully kill him. She thinks that I should be happy about this and how much she protects me.. Says he "gives (me) nothing" and "(she) gives me everything" and has amped up normal care by demanding I take vitamins and wash my face 2X a day etc. She has been really mean and refused to attend therapy with me because I "only want to go when things don't go (MY) way" and there "is no relationship " between us. Last night she gave me back the computer I bought and the phone she lets me use but tonight I overheard her setting up tracking alerts and parental controls on the phone and she has threatened to come to my college during my breaks to make sure I don't go online and is putting expensive restrictions on the wifi and not letting me drive without the phone that tracks my every move. Im on the computer at the moment but I suspect that it is also bugged... I feel so flipping helpless and unable to break away from this without losing my family completely.

This is the second time she has done this and she keeps badmouthing him and saying she wishes he were dead... Its awful to hear and try to make sense of... I have no savings and no job because I'm not allowed to have one and if I do, money "should" go to her . Please give me advice!!!