DD is 11 and DS is 14 months (there are two more siblings in between.) DS has been walking since he was 9 months old, so it's not new news. However, I constantly have to deal with situations that arise because of DDs thoughtlessness. She will leave Lego/sharpies/coins/batteries on the floor that I then have to prise off DS, usually resulting in tears. Despite repeated reminders she keeps leaving the stair gate open, meaning I always have to be on extra high alert and repeatedly remove him from the stairs - again causing tears. She has also left it open at the top and I only just managed to catch him before he fell.
She will chase him on paths despite me asking her to do it only on grass because he's likely to trip. She will be walking holding hands with him then decide to let go and cross the road, with no thought that he'll try and follow her. Pretty much every time she has a shower, she'll leave the bathroom before drying, getting all of the kitchen tiles soaking wet which then causes DS to slip and hurt himself. She just doesn't seem to give a shit that she causes him to get upset/hurt repeatedly and seems to think I should carry him 24/7 so she can continue to do whatever she likes.
She actually adores him and is always chatting to and playing with him but just can't seem to be considerate. AIBU to expect her to be?