The good news is, I can tell what the story is about from reading the logline (That isn't true of every logline I read on this site)
Where this logline could improve:
first: I would drop the leads age from the logline, instead I would add an adjective to give us a glimpse of the leads character.
Second: I think the weakest part of the logline is when you say "Must overcome" I am not sure what that means in practical terms. Does it mean they must endure, or does it mean they have a course of action to change the Muslim fathers mind? If it's the latter you should tell us how they plan on changing the fathers mind, (How they must overcome) instead of the more vague, ?that they just, 'must overcome'
However I do believe this logline is close to what you want. Whatever advice you get, think small changes, not a complete re-write.
Looks like an interesting story.