Jerry Springer Shit

So I’ve been with my boyfriend for a year. I’m currently 14 weeks pregnant. He has a two year old son.. his name is Liam. Well I went to go pick up my bf and his son up from Liams grandmothers house ( the babies moms side) and she was sitting in her car. I pulled up and texted my bf that I was there and the grandma came walking towards my car, so I thought she was coming to say hi. I rolled down my window and she started asking me why I was there, over and over. I kept answering that I was getting my boyfriend. She started asking if I was gonna keep causing any issues at her home, I told her that we’ve already talked about this (we’ve had one issue before when I was fighting with my boyfriend about 5 months ago, but again we’ve talked multiple times since then) she kept proceeding to tell me all this bullshit. At this point she was making me really emotional because I haven’t done anything to her and the issue we did have we talked about. Just last month she was helping me unload my car which was full of the baby Liams birthday gifts because his birthday was last month. Her hands were in my car and she was leaning in and I asked her to please get away from my car so I could leave, things proceeded and she told me that she was gonna slap the shit out of me... WHILE IM PREGNANT WITH HER GRANDSONS SISTER. She then proceeded to lie to my boyfriend. My question is should I text her this or just leave it? I’ve done things for her and I barely know the damn woman and I’m not okay with her threatening to hurt me while I’m pregnant with my daughter. She also wouldn’t let my bf leave with his son with me and is saying I can’t be around Liam lol. My bf said she is drunk but I don’t give a fuck nobody will threaten me without me saying something back.

My question is should I text her this? Or just leave it..