Need reassurance - New horse owner

[Scribbler]

@Incantation

I had a lovely, level headed mare that I took on an organized ride. She about lost her mind when a person rode up behind us on a TWH. That just did not sound right to her and she was convinced said horse was an alien or worse.
Same horse was invited to show at the local donkey and mule show as she was fine with them right off the bat.

Gaited horses are rare here, and when we had a TW in residence, his footfall patterns blew my mares mind. I think he sounded panicked to her

[Incantation]

@Scribbler

I think he sounded panicked to her

That could be it.