A good friend of mine who lives locally has a DS the same age as my DD (3). She often offers to look after my DD for the day, so I can work. But, every single time, she comes home and is ill the next day, cold/gastro/runny nose. She just doesn't look after them like I would. She lets them play outside in just a tracksuit (despite me sending her in layers of clothes/coats/scarves etc). She doesn't wash their hands before eating. Her DS is always ill, and always snotty, and she encourages kissing and cuddles all the time. I don't want to ruin our friendship, and I feel by bringing anything up, I would be criticising her, but what would you do.....?