Ok, the Daughter brought this home a couple of months ago, when it was half as big and had no flowers. It is now flowering like mad. (At least I hope those are flowers!) It doesn't really show up too well, but the underside of the leaves are a striking crimson color.
I have absolutely no idea what kind of plant this is. Anybody know? It has been on a west windowsill, so I want to make sure it's ok to leave it there over the summer, when the sun gets pretty intense through the glass.