I know two people that currently board with her, and one other that occasionally lessons with her. I also know the person that teaches for her in the winter.
they are quite near me, and in a barn we had thought of buying.
The people I know are happy with her program and teaching style. She teaches using the EC levels if that matters.
The only negatives I can think of are:
1) Indoor arena is smallish: 80 by 120.
2) Pricey board/lessons for our area (but then there aren't many eventers to compare to!)
3) Allow jumping outside of lessons/unsupervised which some people like, but some people find scary/chaotic as the indoor is small.
From what I know of her barn/program I have no trouble recommending it to people who inquire looking for an eventing barn and feel the horses are well taken care of.