Marija with Molitva, of course! :D
She wasn't there to recieve the price in person, but she sent her best regards and told them how proud she was.
You can watch a short clip of her performance here, if you scroll down to the video with two blonde kids with the text "Bästa bobsterlive: Marija med Molitva" underneath it.
I'm so proud that my country has given Marija an award, even if it's just for appearing in a kid's show :D