It can't be unlocked, but I've seen her ass grow. So you're working on it and I'm waiting for updates. And what about Hari? Will it also be possible to unlock it in the next updates?
I discovered in a certain game file (that you might want to change to 'csv' format, BTW) a reference to a character called Paige. ^^ I see that Caroline has a planned progression, too. I can't wait to see Luna's evolution--I see one of her attributes is going to be absolutely insane, and I want more like her! <3