Is it normal for children to sleep with their tongue out?

[Frume]

Aibu to be concerned about this or is this normal?

I hadn't noticed before, but recently my 6.5yo DD has been sleeping with either her mouth slightly open or her tongue sticking out slightly?

My mind goes to sleep apnoea, but I don't want to use Dr Google or bother my GP if it's normal..

She also sleeps with her eyes slightly open