Confront isn't really the right word because I don't want to be confrontational at all, more reassure her. Before i start, I just want to make it clear that we really do appreciate her. She does a lot for us, and often offers to look after the kids for us. But there's something that really grates. She often lies about why she can't have them, or has to pick them up late. But I'm not really sure why! For example she offered to have the kids tonight because we have to have a post Christmas sort out, and said that she's tidying her own house up and won't be round until 3. Absolutely fine, I'm just grateful for the childcare. But then her housemate posts pictures of what they're upto today (making it clear that it's today) and I just don't understand why she feels the need to lie? If she wants to pick up the kids later she doesn't have to give us an explanation, we totally understand and I don't feel like we've ever given her reason to feel like she has to. She's now late because they're on their way back from wherever they've been, and that's fine too. I think that's the main point I'm trying to make, like we understand she has her own life and we don't demand anything of her at all, so why lie about it?