Does anyone have advice on this? I have two girls, 3 and 10 and they just don’t get on. The older one is very jealous of the younger one. They constantly bicker and argue. I know it sounds ridiculous as you’d think the ten year old would know better but it’s like she’s regressing. I make sure I spend lots of one on one time with the older one and have done since the youngest was born. I make a point of spending at least an hour with her after the three year old has gone to bed daily and we have girly days out just me and her but it makes no difference. It’s really draining . The little one’s face lights up when her sister is nice to her but it’s so rare. She’s mostly shoving her out of her bedroom and doing sneaky things like stealing her food or poking her. The little one is no pushover and will scream and tell me what’s happened. How can I foster a better relationship between them? I have two siblings myself and I don’t recall feeling jealous of them but the age gaps were different. I think dd1 had got used to undivided attention because it was just her for so long.