I think I can probably help you out a little bit now that I've seen you guys run in person. You were correct for the mmost part in the pattern, but you're not a hugely aggressive rider which I think is one of the reasons why you aren't faster. However, that comes with confidence building and a lot of practice. You're still fairly new at this, there's no reason to be hard on yourself.
Next time I see you, if you're up to it, I might like you to ride Selena a little because she does a few things that you can feel extremely easy that should transfer over to Gidget. Your horse has "it", we just need to get you more comfortable. Honestly, Gidget is a pretty powerful horse, especially since she knows what her job is. She is little but Selena is littler, and she has ran a 16 in that arena before. I know you guys can get up there.
I think you could also benefit from a little breezing maybe. If you can find an open area, put one hand on your horn, move your other hand up her neck and just let her fly and keep kissing and nudging her and just feel what she can do. Let the reins literally flop. Right now, I don't think Gidget believes that you really want her to go fast. That is a lot of people's problems to, and that's why you notice a lot of hot horses that get kids on them settle down: Because the kid doesn't radiate aggressive riding energy. Same with a passive rider. There's not a huge amount of "go" yet in the rider because they don't know what it really feels like, and that's perfectly fine.
If you would of told me a year ago that Selena would be the horse that has been winning at Gymkhanas I would of laughed and referred you to a mental hospital. What I found out though was that she was more than capable of running; She just didn't believe that I wanted her to, because I didn't believe she could.
Even miss Sherry Cervi, Brenda Mays, Brittany Pozzi, Jody Sheffield and Martha Josey were exactly where you are right now. The point between slow and fast where you are trying to get moving but you aren't quite sure what it really feels like and you don't know what you are doing wrong and how to fix it, which is why we have trainers!
To this day I can't go into a barrel lesson with Toni without hearing at least once "WHAT THE HELL ARE YOU DOING? WHERE DO YOU THINK YOU'RE GOING?"
Also the inside leg I was telling you about while we were waiting. Tap tap inside leg five strides out, get the bend, soften her, enter 3/4 feet away from the barrel, outside leg to finish the turn at the third quarter of the turn and then pull yourself forward again with your horn and just let her fly again.