What would you do??

Just need to rant because I’m SO angry and looking for some opinions. So my little girl (14 weeks) hasn’t been well this past week with a cold but seems to be getting over it the past couple of days. Anyways this morning out of no where I was literally just getting her changed and she started screaming. Not just crying, absolutely screaming. She was struggling to catch her breath, tears rolling down her face, going bright red and nothing would soothe her. She was due a bottle and she was definitely due a nap as she hasn’t napped all morning but she has never cried like that for either before - she has never cried like that for anything, even when she had her injections. So obviously I was crying my eyes out, so distressed. She eventually took her bottle but only drank 1oz before going to sleep (she slept for half an hour and finished it when she woke up - full of smiles😐) But anyways, the point is we were meant to be going over my mother in laws. But when that happened, my partner text her and said we wouldn’t be over like we had said, explained what happened and said, like me and him had agreed, that we were going to let her nap for a bit as she needed it, didn’t want to wake her up putting her in her car seat and we’d see what she was actually like when she woke up and let her know whether we’d be over or not. But she text back saying she was on her way over. When she got here she immediately started questioning everything. Asked if we’d took her temperature and I explained we hadn’t as she was sleeping (that’s how quick she got over). Literally the second she opened her eyes she was saying “come here, grandma will take your temperature” and came over to get her and did it. Temperature was completely fine, as I knew it would be as I had been checking religiously with her having her first cold and being a first time mum who worries about everything. I went up to the toilet and came down and here was my MIL giving my daughter calpol. When I asked what she was doing, she said she was giving her calpol as she clearly isn’t feeling well - despite her having no temperature, woke up her usual self etc. She kept saying “oh she clearly has a cold” which granted she did a few days ago but she was pretty much back to herself now, no cough, not blocked up anymore. I don’t know why she’d think it was acceptable to give my daughter medication without asking me first!! I’m not a confrontational person and I was just so shocked I didn’t know what to say. She’d also brought her a soft book and she asked if she could fold back my daughter’s scratch mitts on her sleepsuit so she could grab for it (asked that but didn’t ask about giving her medication). I said yes. She then started making comments like “are you liking that? Does mammy not let you play and have your scratch mitts on all the time?” And brushing it off as a joke. I play with my daughter ALL the time but yes, when we are not playing I fold her sleeves over because no matter how much I file her nails down, she constantly has her hands in her mouth and always manages to find a way to scratch herself. I just keep playing it all back and I just can’t believe it. I know that was a long one so well done if you made it this far. There was some other little comments but this would go on for days if I wrote them all. Do you think I’m overthinking it? What would you do?