I have a pony who is 16 years old (shetland x welsh cross), and she is 12.3H and I have had her since she was 10. Lately when I have been riding whatever the weather and with a proper warm up she is always panting. I am like 4"10 and I weigh like 80 pounds am I too heavy? I am starting 4-H soon and I would like to know sooner rather than later if I a too big for her. If I was too big for her I would not sell her I would save up for another horse and keep her, but I don't want to hurt her and 4-H is a lot of work so she would be working quite a bit. Every single time we canter she does it rain or shine. She never used to do it that is why I am concerned. I've attached the pictures. I usually wear proper shoes and I always wear a helmet, BUT I was outside and my sister already had a camera so I just hopped on quick to take the pictures. I know I should not have and horses are unpredictable, but it was time efficient . I ride with a halter and bareback at home, but at lessons I ride english and western with a bitless bridle. I really would be crushed if I couldn't ride her, but I don't want to injure her. Also do you think that 4-H is too much for her? Thanks, Emily and Rosie.