How far do you think she could go in showjumping?

I reckon she would be good! :)

Nice mare! Worth working on!
I would also recommend lots of grids incorporating bounces, one and two strides. Hopefully five or six jumps that can be constantly changed. She really needs to be engaged a bit more to allow better thrust from her haunch over the fences. Also, dressage will help her bend better around tighter turns. I see a lot of counter bend around turns. While OK in hunters, NOT in jumpers or eventing.

I would hesitate to take her in XC higher than novice until her knees are tidier. She can hook her knees on a solid obstacle and flip.

I am going to be getting flatwork lessons and mostly working on jumping on my own time once a week as well as the lessons so I was thinking of working any good dressage work into my lessons and doing a couple of grids on my jumping day of the week what do you think of that idea?

Sounds like you have a pretty good grip on what she needs now. Jumping once or twice a week will be good for her. One day can be grids, another can be courses. Grids, grids, grids!

Also, I think in addition to the gridwork that cavaletti would be good too. That might help her figure out where her feet are a bit more. Cavaletti makes the horse pick up their feet.

Completely agree with Allison's advice. (Except for the bit about counter bend being okay in hunters - no, it's not! )

A big part of successful grid work is having someone on the ground looking at your horse's form through the grid and adjusting the striding and adding elements to the grid.

So if you can work it out, try to have at least your first couple of sessions of grid work with a trainer or experienced ground person, big help.

Flatwork to help supple her equally on both sides is always a good idea.

Thank you so much everyone for your advice and help and I will try to work on everything everyone has said as it has all been so helpful to me. I might not be able to start this week because first of all the ground is frozen solid :( its the most annoying thing ever and by the time the ice and stuff melts its dark and we are nearly at Christmas so I am going to work on everything as soon as I can and I can't thank you all enough for your help

Maura, I was not trying to be rude in any way at all!
I was just trying to help! :roll:

Both of you guys are cute together. Your horse is a saint and adores you and you're a brave little rider. Your attitude as a rider is also refreshing. You asked for advice and opinion, and you are taking it very openly and positively. I think with some proper training both of you would be absolutely phenomenal.

You sound like a very eager rider and it's wonderful, but you have to be very careful. You are already jumping heights that are of a substancial height and I don't feel(by looking at your photos), that your position and your riding matches what it should be for that height of and complexicity of the course. With your eagerness and dedication to riding, you can definitily (and I'm sure fairly easily)improve your riding but you have to work with a trainer, someone who will guide you and help you make those changes in order to make it safer to assist your horse and improve yourself to make those courses a lot safer.

Your mare is an absolute saint for going thru with the course and it's of course something you wouldn't want to shatter or break. Your mare doesn't have a very safe technique nor does she seem to know how to balance herself properly. Again it's something that can be corrected with a trainer (and the proper training program to teach her the proper technique).

Both of you guys have the heart, the bond and the go getter attitude to compete at a decent level of competition but you need to go into training to correct and improve yourselves. I'm really worried when I look at the photos you posted. In my opinion, if you continue things the way they are, it's only a matter of time before a catastrophic accident occurs.

Good luck kiddo.

When was that video taken? I stopped watching a few seconds after she almost ran out on you. I have a short attention span today.

You need to focus on your body position like some posters said. It can help or hinder your horse while jumping. You legs looked like they were slipping back, if sliped back enough you could be leaning on your horse over 4 foot fences, which effects her balance, and could be catestrophic.

Your horse looks good for lower levels, but for higher jumps you and your horse need to keep practicing. You need to hover up there in a two point, without slipping too far back, your mare needs to learn to tuck tighter.

Both of which can be corrected by what everyone else suggested, lots of grids. Some horses just can't jump over 3-4 feet for that reason, they just can't tuck well enough. I'm not saying your horse can't do it, but don't have your heart set on jumping too much higher, she just might not be able to do it.

Well first and formost you need to canter to those jumps! I really don't think you should be jumping her that high AT all. She just isnt ready. Just perfection at lower levels then start going higher. But you need a trainer. Simple as that.