AITA/ rant!!!

So my MIL and FIL never ever have our child ever today they asked to have her for the first time in around 4 months we agreed they could take her for a couple hours when they left they text us to tell us she’d had a few loose poops I told them that she was fine this morning but they can bring her back if they like (she is fed through a peg so we are more catious) they told us no it’s okay, we had agreed for them to bring her back at 5 as that’s when her peg feed is and they are not trained in it (they where offered the training but declined) … they than failed to answer there phones and brought her home at 6:45!! When getting her ready I thought I could smell Calpol but thought I was imagining it I got her dressed and her dad went to put her on her feed and said to me “she smells like Calpol” I told him I had thought the same thing! He asked his parents and they said they gave her some because they thought her belly might be hurting, he asked why they didn’t tell us and they said “well we didn’t think we had to ask and we didn’t feel the need to tell you because why would you need to give her anymore in the next few hours anyway” I am actually quite upset because even though it’s unlikely she would what if she had a temp in the next couple hours? Or I thought she was in pain? If we hadn’t smelt it and asked them we would have given another dose of Calpol! They don’t believe they have done anythign wrong but I do! They should have atleast told me right?