snapman -- your shots are good, and I think you're doing all the right stuff with the gear you have and the arena you shoot in. Much better to shoot from the bench or box than thru netting or glass. Your focal length requires you to be close. Also, pro players don't wear cages, and they really play heads-up, so shooting from high can still capture faces. With kids, if you shoot from high, you can't see the players faces. Your daughter looks like a pretty good skater, but she's mostly looking down. Also, pro rinks are better lit than amateur rinks - you and I can't realistically shoot at ISO800.
best wishes, may your new job have a hockey-fan boss who gives you tickets.