I was able to zoom in on the photo raf linked ( but I was able to zoom from the cached google images link, not rafs link as provided). Same one I found... The eyes are clearly a light brown with kind of a hazelish tint but definately light brown. IIRC, Annasmom recently posted Anna had light brown eyes when asked to describe the color brown.
I also agree it was difficult to tell based on the photo angle which is why I asked for more eyes.
ETA: I think the violin teacher looks petite and thin.... she looks 'smaller than average' in the chair based on the chair size. Compared to the chairs at the table, the one she is sitting in does not look oversized. jmo for additional thoughts....
I agree we need to look further. Can anyone tell if she is related to the Evelyn Wanek GW knew? If there is no direct link to this Wanek and Evelyn, I think we can safely rule her out. Thoughts?
ETA again: I also think there is something distinctive about the violin teachers eyes, if anyone can pull up the photo and zoom closer..... what are your thoughts about her eyes compared to Anna's eyes? For me there is enough of a resemblence there too, but it is hard to tell....