Sunchaser Stables said:
Here's an idea: ask what tack she's been trained with. Also, ask about her personality traits, whether she's shy or not, her past history, her general health, riding habits, who the vet is and all that.

https://www.savvyhorsewoman.com/2014/06/101-questions-to-ask-when-buying-horse.html

Here's a link to the questions you should ask. :)

Thank you!

No prob!

I don't think tack matters. We bought a horse last year who had been ridden western for his entire riding life and we have only ever ridden him in English tack.