Dd is 7 & and I have to say that when she gets them, I don't wash all her linen, I don't treat us all, wet dust, clean her soft toys. Just remove it, get her out of her pjs, get her to wash her hands - which she has to do before we do anything else (i.e touch drawers etc) I open all doors, turn on taps, dispense soap, so she isn't touching anything with 'dirty' hands - she gets fresh pjs on & and I treat her.
We combat them by making sure she cleans her hands before she eats regardless of what she is doing & she doesn't put anything into her mouth. She has also learnt to brush under her nails each wash.
So it may even be that she has itched her bottom before you treat her, transferred the eggs onto her self (face, arm etc) teddy etc, then touched it again before sucking her fingers. Or they are lying under her nails. Her nails don't have to be long!
Also, remember that it not all children are treated & many children don't wash their hands at school. So they could use the toilet, touch the door handles/shared pencils/scissors etc with eggs on their hands, leaving the eggs on those times, your daughter comes along, touches it, chews hands...eggs go in, worms come out.
She really needs to stop sucking/chewing her fingers, because through all that you are doing, they are getting into her somehow. And there really is NO point you doing all you are, if she is picking them up at school, because she doesn't wash at school/chews fingers.