Yeah I told her it didn't work like that and the eyelash had to fall out on it's own but she's carried on doing it I think it's become a habit now, it's just hard to understand because she truely is a happy little thing
It's difficult at seven. Even if you're told it won't work you still don't believe it. It's difficult as an adult.
(How often do you still ask God if you can swop places with her?)
It's a condition she has to come to terms with, (as well as you, and your partner).
Distraction is good, but then you can risk straying into making her feel something is really different now by too much attention.
But the substitution for her hands, (rather than for the idea) is good advice.
Because in some gentle way, she does need to (eventually) know the wish won't happen.
(Medical science will give her a good life, and advancements every day are impressive, but it won't be magic, it'll be reality)
Possibly meeting others her age, and older, who live with T1 would reassure her she's still normal, and give her a peer group to play with as suggested above.