Am i wrong to hate my mom for leaving me?

Im 16. a year ago my mom met a guy online, hes a truck driver. they talked for a month and such and met i think once. he seemed ok to me. then he went out over the road and i was at home one day when she came in, packed a huge suitcase in five minutes, kissed my head and walked out saying he needed her support. they got engaged and broke up. my mom abandoned me. whenever i called her and stuff to see how she was she would tell me she was busy./ i stayed by myself for a week till my sister realized she was gonna and i moved in with her. my mom signed over complete guardianship in literally a few seconds not even thinking about it. she called me a two faced little brat. im 16 now. each time i even try to talk to her she bit***s me out about what i do wrong. shes a truck driver too. she complains that shes got nothing left in the world and etc..i feel horrible. i tried to stay liking her because she was my mother but...i just cant anymore..after all the things she does. what do i do..i have started experiencing anxiety attacks because of this. my dad isn't in the picture at all.