family trouble rant. (long) I apologize

my fiancée mom is 37... and pregnant with baby number 8 (which is awesome don't get me wrong) yet not so awesome that she got pregnant on purpose in spite of me and her son expecting.. she completely has it out for me every since she found out she was pregnant as I stopped talking to her because she compared me to my fiances ex(she got pregnant on purpose and won't let him see his son).. A few days ago we had to go to his house to pick up money from his mother's boyfriend that he owed him from work, and she walked out in front of the car and I was sitting in the passenger seat minding my own business... she was screaming at him at the top of her longs for not being around the family as much. (because we just found out they were selling drugs out of the house) so he moved in with me. The second I looked at her she started cussing me out and kept screaming that she wanted to fight me? she ran at me while I'm sitting in the car to my door, screaming and yelling. she made a crack in the passenger side windshield, dented the side of the car from kicking it. and almost ripped off the door handle and effort to try to get to me... we're filing restraining orders against her and her boyfriend  soon as he's off work because she threatened to hurt me and my baby, and her boyfriend threatened my fiancé's life because he ratted him out about selling drugs out of the house with all six kids living out there. honestly... what do I do?