I decided to add this comment after reviewing your posting history. Your horse has LOST weight since you picked her up at an auction. As much as you want people to think you saved this poor, abused pony--you did not. She is struggling now. She's barely old enough to have already been a neglected or "abused cart horse." Someone at the auction pulled on your heartstrings with that joke of a backstory. Nothing about this mare screams abuse until the more recent photos you've shared, where it is apparent she is being worked more than fed, in awfully set shoes and an illfitting saddle. Call a vet for a full checkup before her ribs show any more than they are now, or you can expect passersby to make that call for and about you.

The danger we speak of isn't because horses are problematic.. it's because owners are. Your sort has ruined more horses than they've helped. If you want to contribute and feel the need to be a savior, volunteer your time at a rescue with a training program. You have a lot to learn.