Nope. She's said she wanna do a lot more than just rock and create a sound that's "Lovendor." Not a small dream, but a fair one at least. She said when they were on Nishikawa's show that she wanted to do music like his and that's not really rock, but more pop-rock if anything. But she likes mellow stuff too and oldschool so who knows.
They seem to like their first original song too quite a lot.
So we'll see, they're probably still developing their own sound. But she's made it clear that they're not going for /rock/ perse.
Reina likes to play idol too so lol. And I think that's great and works fine, doesn't hurt to have one like that. The other three needs to work more on individual styles and once that's done - especially Marina since she's at the front with her - they'd probably look a lot stronger and stable too.