@kalikk,
I'd say it would be unlikely you would be able to exploit a filtered port, even if it's open. Since a "filtered port" means that there is some kind of firewall, filter or something else that is blocking the port in some way.
How do you know the port is "filtered" but open?
How do you know someone "hacked your daughter's laptop" ?
What exactly makes you think it's been hacked?
You'll need to provide more information if you want better help.