Maybe I'm in the few people who actually liked Dilana's own song. No, she's probably not the best songwriter, but it was true to her style. Bad thing is it's not really true to Supernova's style. (whatever that is)
I was quite certain Dilana would be leaving rather than Storm, however, I think SN actually kept her on one more week so she can be more aptly let go next time around leaving 3 boys to front the band.
They knew Storm had it going on too good to front them and was better off on her own. So they did a sweet farewell while they had the chance.
Who really can figure out what these guys want anyway?