My parents took my DD (3) out for the day. When they came back my DD had dried bird poo in some of her hair and a splodge on her dress. My DP said they hadn’t noticed. I was annoyed at this to begin with but now she’s been in bed for a few hours and I’ve spent time googling how dangerous breathing in dried bird poo can be I’m really upset and worried. Will DD potentially get really unwell? Should I mention to my parents again that they really should have noticed and not noticing was negligent? Or am I overreacting.