Which HPW are you using?
HPW is a much thinner staple than BML so it may just take some time for her appetite to adjust.
There have been discussions about gliders being fed HPW Complete eating excessive amounts of it (if extra is offered) and never quite appearing to be satisfied.
If you are only offering the recommended 1 TBS HPW, 1 TBS fruits and 1 TBS vegetables your glider cannot really 'overeat'.