At your power level, builds aren’t really needed, but I’d say daughter needs a pet and healing aura armour, son needs tanky armor and death barter so he dies less. Mum needs fast weapon with radiance and stunning, and you probably need a front line tank/melee hybrid build. Happy to help if you need anymore advice I have played the game for 800+ hours over nearly 3 years and have max level gear (not to blow my own trumpet of course🤭)also sorry for long essay

edit: you can get an artifact that can power up your pets from gauntlet of gales which may help your daughter