my boys are so so mean to their little sister I actually sat up in my room earlier as they’ve upset me so much, they are extremely jealous of her even though i treat them equally but naturally she is the youngest so requires more help with things and they see that as me “favouring her” even stuff like sitting on the sofa if she’s sat next to me they get jealous and tell her to move or have a go at her and tell her not to sit near me on the sofa?! they are both boys so they team up together against her is what it feels like. i have now had to come up to my room as they were being so rude. i need some space from them.. how do others that have been through this deal with it?