I had this problem, but now I can get well above hip height.
Stretch, stretch, stretch, stretch! Flexibility helps, learning the splits will help with loads of figure skating moves, splits jumps, even if you fall into the splits it won't hurt as much.
Anyway,you need leg strength. You can be as flexible as you want but if you have no leg strength then you can't lift your leg up high.
Practise spirals, on and off the ice. Hold onto the barrier and raise your leg.
Do spirals off ice, holding onto something and without holding onto something.
Practising raising your leg over and over again
Good luck
