I would just bring it up to her. You two are already close so just share your feelings. If she is not a fan then she will tell you. Even then she is likely to want to make you happy and will want to explore it with you.
we want to go further but her bro and uncle are the problem.she has not had sex or any contact with her self for a year and must be gagging for it but wont tell me
So because she's not gagging for it she must be shagging her family?
As to the original post I think you need to grow up a little and try and help her rather than worry about whether you'll be geting something sexual out of it