At home, we have no enclosed space to ride in-mostly straights, so I've never been really concerned about my horse's head placement. However, this shows when we go for lessons in an arena. She always wants to look to the outside. At home she's worse. Now that I actually am noticing where her head is, it's irritating because it's always looking outwards, or twisted on an angle trying to look at stuff, and you have to always be niggling the inside rein to get her to turn her head in. Once she gives and turns her head in, I release, but she just turns her head and continues looking at whatever she's interested in. Sometimes when you tap and jiggle to bring her head around, she'll bring her neck over, yet continue looking outwards. It's hard to explain, and it's really odd. I'm sort of at a loss here, because she's always done this, and it hasn't seemed to have improved any.
What can I do to teach her to look to the inside?