Overreacting?

We left our 6 month old with my in-laws for an hour just so we could get a food shop in. We gave clear instructions that she was due a nap and would finish the rest of her bottle prior to that - our baby is a routine baby, and often gets upset if that routine isn’t followed as best as we can When we came back, she was outside in the direct sun without any protection, she hadn’t taken a nap and was extremely upset. Later on, we were told (not by them) that they had given her solids without asking first and that was the first time she had, had that solid (we are gradually introducing it ourselves). They forgot to offer the bottle again and just shrugged it off. Am I overreacting I’m not trusting them with our baby? This is the THIRD time we have left them with clear instructions and they’ve gone against it and said I’m being overbearing as a first time mum. I have severe PPD and PPA and leaving her is a big jump for me and now I feel like I can’t even leave her with them for an hour without feeling extremely worried