Mother driving me crazy

My little man is 7 weeks old... i just went back to work today and my mother is going to watch him while i work every other Saturday here (my other job I’ll be bringing him with me) well I’ve had HORRIBLE anxiety about him staying with anyone besides me and anxiety about visitors/ him leaving the house etc. my mother text me awhile ago telling me her my father and the baby are all at the camper (after i asked her what they were up to)hanging out.... first of all, it’s 45 degrees here.... secondly I’m furious she didn’t shoot me a text letting me know or ask me if they could take my 7 week old somewhere. My mother and i have never gotten along let me add. I’m shaking I’m so mad because I’m terrified my little man will get sick. I told her i would just stay home with him instead of coming into my second job. Rant over. Anyone have any similar issues with their mother? Also, an i wrong for thinking she should have asked me or consulted with me before taking him out in “frost advisory” weather?!