You can find the lyrics to Flicka från Backafall in this pdf or this page or this one and some others if you put "Flicka från Backafall, briggen Tre Bröder" in a search engine. You can also find a score here. I couldn't find a translation but an online translator might give you an idea (IMO it's better to try several of them...)

Excerpt from the 1953 movie including the song. The lyrics are below the video.
Recording by Tommy Körberg"