Well, i don’t have a lot of experience with chlidhood friends but, i guess so. But if she does, you guys can still be friends after all a good moment for asking her out would be in a highly emotional or romantic moment, just like anime. That is what i do and 89.8% of the time they say yes. So just go and tell her, after all if she says no it may be a message from the universe to move on or wait a little bit more time.