While there are a few places that charge very large amounts, most places are around $30/hour, including a few people I know that I really respect. I'm more wondering if you can read her description and look at her pictures and tell me if she sounds like a decent rider - as in she actually rides correctly. I don't know the names of the places, events, trainers, etc. to know if they're as elite as they sound. For instance, I could say that I've won the state championship in bareback, reining, and western pleasure. That would be true - but that was when I was 14 and in 4-H. Not exactly an "elite" trainer. I'm sure people could pick apart my riding then if I'd posted a picture or video here.
To me, she sounds good, but I don't know how to judge her ability at all since I'm not familiar with the discipline. I can tell you she looks cool and like she knows what she's doing over those jumps! But that's about it.