here's the info on my mare:

5 year old Pintaloosa mare, broke to ride but not in regular work. The only lameness issues she has had were a crack in her left fore foot when she was 3 months old. She knocked a chunk out of it and it often cracks. Her current lameness is in her right fore...I can not tell if it is her hoof or her leg. She is limping noticeably at a walk, refuses to trot, stands with her foot pointed forward with as much weight off her heel as possible. Uneven ground seems to make her limp more, limp is also worse when she turns to the left. No heat, swelling, etc in hoof or leg. No noticeable sensitivity when I lift the leg and flex the knee, pastern, shoulder. There are some cracks and signs of White Line Disease in the front feet and we treated both fronts with a round of White Lightning to fix that. She has abcessed in her left fore once.
Now my plan of action is to soak the right front foot in a hot epsom salt tomorrow and do that daily. She is on rest, not shod. In 2 weeks my regular farrier is coming back and if the problem persists he will look at her and if she gets worse she is going to the vet before that 2 weeks.

My thoughts on what it could be are:
abcess in right fore
Strain, pulled muscle, soreness in pastern, knee or shoulder
pain from White Line Disease

I have pics of her feet that show the signs of WLD, just have to figure out how to upload them here.

Any thoughts or ideas on what I can do? I'm thinking if there was an abcess the hoof would be hot, and if she pulled something there would most likely be heat or swelling and there's none.

have you hoof tested her?

Classic abcess symptoms, but maybe-

It's June and on the East coast-grass is in it's prime.
Founder-although normally with heat
Slab fractures can cause most of those symptoms without heat/swelling
Sesmoidial injuries
Bad shoeing/trimming-may have hoof angle set to high/low for fetlock to ground line.

In these cases it is best to have your Vet out, sometimes guessing can just delaying getting proper treatment and make things worse.

Good Luck

Maybe a stone bruise? You could try sugar/iodine paste to draw abcess.....if thats what it is.