Ah. Well, if she has no idea....next time you happen by a jewelry store, try to get a feel for what she prefers. "Gee, that's a pretty ring...."
I suggested it because I was surprised twice. I always hated the first ring, and probably wouldn't have chosen my current one, but I do like it. I would have preferred giving a suggestion or two. I know... that's me, tho.
Best of luck to you both.