Just for background information, I took lessons with Christine for about 4 years throughout high school with a focus in classical voice. I currently still study voice in college and I can honestly say I have the most helpful foundation I could have ever asked for for that.
Christine instills a very strong vocal foundation both artistically and technically. She doesn't dumb anything down, but is absolutely understandable even for beginners. She is also incredibly knowledgeable as a musician, which is enormously helpful because with each new piece she adds to your repertoire, she also builds theoretical and artistic knowledge which helps you be able to perform other pieces later on. So I went into a lot of later repertoire having a solid understanding of the purpose and context of the music I was singing.
Also, she never loses sight of the artistic aspects of singing, never letting pronunciation, oddly placed breaths, facial expressions, body language, misunderstanding of text, etc, slide. This seems kind of standard, but it's actually a really professional way of treating your students and made me personally, approach my music with as much professionalism as I had developed.
I also found it extremely helpful that she explained why she did asked me to do certain things or ignore other things because, especially for beginners, classical training can seem like a black box and occasionally feels like it's taking you backwards. Having those explanations assuaged a lot of that fear.
In my experience, I felt a lot of changes both explicitly and implicitly. I felt my voice grow, in range and strength, and my technical foundation and knowledge are both fairly solid. I stopped fidgeting and found a tremendously improved focus and composure while performing (a big problem for me). My Italian pronunciation is actually quite good now. My ear and internal tempo are both MUCH better. My theoretical knowledge is a lot more in depth than it was, (kind of a bonus because that's not her job). And my contextual knowledge of music is also at a much higher level than it would have been otherwise.
Overall, Christine is a really talented teacher and musician who provides a lot of understandable but high level information, impeccable and PRECISE technique, and an artistic but academic approach to music and singing which lays a perfect philosophy in her students for continuing to grow as musicians.