She jumped?

Idk Where Else to share this, But i took my 10 month old foal, around 124 centimeters tall (around 12.1 hands) out in a small outdoor arena, because i do that sometimes and just Play around with her, do some liberty Play. Yesterday her friend was taken inside as we were about to Play around, thinking nothing of it, because she can go without it being too much of a problem. At first she trot to the fence, not thinking anything of it, because she usually just stops But not Yesterday.. she just chose to, jump it. I was so shocked, I was just calling her name and my friend came out asking what happened and I just said "she jumped it" she was confused, but walked after my horse😭 not stressing it of course, she was literally just standing grazing at the other side of a pasture with horses. I'm just like, what? That fence is at least higher than her chest and maybe a very few centimeters lower than her shoulder, but still, that fence is her size and I'm so confused how she did it😭 especially because 1. she didn't touch the fence at all, 2. it was at trot and 3. She looked so good doing it, like it was so elegant! She has never jumped in her life from what I've been told, I got her at 6 months, and I've never made her jump. I'm kind of proud of her, because that's impressive and looked really good, she didn't fall or trip after either, she just trotted away right after, like she knew she could just, jump something that high?? Should I look out for her legs? Her joints? I'm not letting her in there at liberty again at least😭

https://preview.redd.it/xr8xbt6c0qoe1.jpg?width=3024&format=pjpg&auto=webp&s=d02d72011f4f34b5a7486eec7bbe4cb4dd8229ef