The filly is LOVELY. She has the build for a Hunter
They are “lying”, or just “telling the truth in advance” by calling her a Hanoverian since she isn’t registered yet.
You don’t ride papers, BUT, if you have any thoughts of breeding her, or think there’s any chance down the road you’d sell her with “broodmare potential”, you need to seriously consider the validity of her registration AND her ability to be approved for breeding. They are 2 separate things.
The stallion’s page says he’s licensed Hanoverian and Oldenburg. I would call those offices and find out if his approval status is current. If not, registration is questionable for her (I don’t know the details so you’d need to ask them).
I would ask the owner if the mare is approved for breeding with Hano or Old. The assumption is that she is, if they truly are going to have the filly registered, but you can’t assume, since they may not know what they don’t know. Or, if you get ahold of someone in the above offices, ask them about her too.
$15k for a filly out of a TB mare of unknown breeding approval is quite high.
If you couldn’t care less about the filly’s breeding potential, then this matters a lot less BUT, if she ever has a career-ending injury, isn’t even rideable, then using or selling her as a broodmare opens up more possibilities. I like the dam’s pedigree for sport. But if that mare isn’t approved for breeding anywhere, breeding the filly is very limited in terms of where she can be registered. Maybe not a dealbreaker in any of this, but it should be considered.
It’s been fairly well proven that cribbing (and stereotypies in general) are genetic, and need something to trigger it (which doesn’t have to be a lot, depending on the individual)