Please help me

I promise I will get to the point. I need cardio exercise, but it's a long story. Please bear with me, I'm really in a rut

So the past 8 weeks have been absolute hell for me. I'm sorry if it sounds like I'm throwing myself a pity party right now, but they really have been. I readmitted myself into treatment for Anorexia. I had been diagnoes three years ago at 5'4" and 70 lbs. after being hosptialized and nearly losing my life, I regained weight up to 105 lbs. (I've always been small) and recovered. I remained in a remissive state for two years, up until this summer when I relapsed.

My weight dropped down to 92 lbs., and I could feel myself on the verge of a relapse. So I went back to treatment. Dancing and running were becoming compensatory, which was so sad since I love them more than anything. I took a nine week haitus in order to gain up to my growth curve range of 108-112 lbs. for my height of 5'4.5"

As of today, I hit my range, weighing in at 110 lbs. It's been a VERY fast paced weight gain, and very difficult. I'm so uncomfortable with my body, but know it's worth it, since I could dance and run again. The number didn't even bother me, because I knew I would be at peace with myself.

So I came home from treatment tongiht, eager to dance. I began, and entered an almost meditative state. The steps came back like magic, and all of my troubles melted away. The only thing that mattered was the dance. And yes, I was at peace with myself.

On an incredible dance jump, I landed funny I landed funny and rolled my ankle. I screamed just because it was so emotionally and physically painful. It's swollen, and I can't even exercise right now. I am so depressed.

My mom thinks I need to eat 2800 calories to MAINTAIN my weight with NO exercise! I physically can't tolerate that much without activity. But aside from numbers, I MISS DANCE AND RUNNING MORE THAN ANYTHING! The 10 minuts of dancing that I got back were incredible, that feeling is what I live for.

I need some cardio to keep me sane. I've worked to hard to do without. I'm devastated. I just want to workout and get myself back into shape and back into an athlete. If ANYONE knows of any cardio that you could do with a sprained/broken foot, I would REALLY appreciate it!

Also, how many calories should a 110 lb., 5'4.5", sedentary 16 year old female eat to maintain weight?

The cardio is the most important questiong though, so any advice is really valued. Thank you so much for reading, and I apologize for the melodramatics.

Very simply, you shouldn't be exercising on a sprained ankle. If you want to do something try pilates, yoga - but cardio will stress the injury, make it worse, and make it take longer to heal.

The amount you need to maintain will be a lot different to any calculator. It depends how much you were eating to gain. You should be taking about 250 calories away from whatever you needed to gain weight and stay there.