How to address alumni interviewer in email?

I was just given the email address and name of the alumni interviewer for a school that i am applying to, and need to send her an email to schedule my email. Do i just address her as Ms. __ with her last name?

Yes, use a title.

I agree. Better to be formal in this case.

Definitely use Ms. In any case, the interviewer is usually quite friendly and encourages you to call him/her by his/her first name, but it’s good to be safe starting out so as not to make any assumptions.

thank you everyone!