Sorry, I never know who is spoiler-free on my flist and who is not. But be assured that I know zip about the eps to come, this was just a very general interview with Sera Gamble - who very much swooned about Bela; she basically worshipped the ground Bela walked on. But it's pretty obvious from this episode where Bela's storyline is headed. She obviously doesn't want to sell the colt. So the only other possibility is that she wants to use it - tadaaaaaaaah, a sob story. A sob story will of course make the Winchesters change their minds about her because they are good boys. Tadaaaaaaaah, Bela is all redeemed and shiny *shrugs*

I think that Kripke has very little to say about if the character stays or goes - she's Ostroff's forced upon pet - so he HAS to make the fans somehow like her. She didn't work out well as an antagonist, she didn't really win the fans over, so the only other way to go is make her good. That's simple deduction *shrugs again*