Take it from me, Adam Dikmann (not sure of last name spelling) is the best private lesson isntructor the mountain's got. He trains the instructors to be instructors.
Toni is great but she teaches kids, not sure if that's the direction for you.
If Adam isn't available, I would ask for Eric, who also trains the instructors. Either one will be able to give a quality lesson. Get there early and request either of those two instructors.
Going to the ski school desk and asking for a good instructor gets you no where. The person at the desk doesn't know who will get the lesson unless you ask for someone specific. Make certain at the point you book your lesson that they guarantee you that Adam or Erik will be YOUR instructor. This holiday weekend they will be pulling any instructor with a heartbeat and giving them a private lesson. You do not want someone who has been catching little kids at the bottom of the Children's learning Center.
If no one else is available, don't waste your money, get her a group lesson. It'll be the same quality.
But this is just my opinion, from what I learned over several years being there.
Good luck!