But thank you for your condescending advice.
I'm sorry for your horse, but when you say she's done this since you've had her(however long that may be), she 'camps out' and you're asking an internet forum, rather than getting her seen to... YOUR rude reply was uncalled for and Golden's advice was entirely reasonable!!
In addition to getting a comprehensive vet check, I'd get a vet chiro, as bodywork is likely an issue(if not THE issue), and also a hoof care practitioner. While only having one unclear pic to go on, by no means sure, but it appears her front hairlines are almost horizontal in that pic, which could indicate founder.