Henn was used to that reaction, really, usually on account of her eyes, red irises on black conjunctiva was enough to cause a little staring no matter where she was.
After a few moments she realized that she was staring back and shook her head, grin emerging once more, "Hi. Wow. This is a little creepy. Totally nice to meet you though, I'm of the opinion that everyone should meet their twin at least once."