is it ok to dry out some fresh fruit with a dehydrator and use it instead of buying predried fruit...

Can't see why not but they may not like it as much because they usually like the foods because of the juices. Couldn't hurt to try it.

ok ill try it and post back

Dried fruit is fine for treats.

For her dinner she does need either fresh or frozen fruits because gliders do get most of their fluid needs by eating juicy fruits and vegetables.

You can also use fresh fruits for treats and snacks.