Right now she volunteers at a barn/farm every Saturday and Sunday, spends 6-7 hours there each day--cleans the stalls, brushes horses etc.
There's a mare there that always pins her ears down when people walk by or approach. My daughter watched some Rick Gore's videos on how to deal with a similar behaviour in pasture, which I understand is very different from dealing with that same behaviour in a stall, as the mare is pretty much "trapped" there and has no way to retreat.
She would still like to know some tips. She tells me (following Rick Gore, I think ) that the mare is being disrespectful to her, and she shouldn't allow this. She says that the mare is now conditioned to pin her ears and thus make people leave, and other girls are scared of her. The mare allows her to put her hand on her face, but turns her head sideways, which my daughter interprets as "Don't you walk around me!"
Are there any tips for my daughter about how to guide this horse to respect her?
If you think any practical suggestions might not be safe for her in her situation, we'd still love to hear the tips, so at least we have some theoretical knowledge. She isn't going to do anything that isn't safe, she's very safety oriented, even wears her helmet at all times, even when not riding, but working in the stalls.