I am a follower of this girl on youtube. And that welsh pony Karin is fabulous!! That weight is definitely not to much for a pony as ponies are built to carry more weight as that was what they were originally bred to do. This girl trained and broke this pont for her younger sister.. who also rides bareback and bridless as a 2 and 3 year old. Go look at the rest of her videos then come back and say that.. the little girl can rear and make it bow and with a saddle and helmet and bridle she can gallop and jump the horse as well. That pony is highly trained and it needed an adult rider to do so. Sorry if I seem rude but I am voicing my opinion. That horse and both girls adult and 3 year are great and the pony is in perfect condition. So I think it's absolutly fine. I have to agree with Kevin.
Baby, Sparta, Carmen, Henry, Hooch, Mercedes, Butterscotch