Gäckelgardet farm entry for Sven Johansson Gustafva is working as a maid for the Sven Johansson family (no known connection to Gustafva, based on cursory review). She arrives from Bergstena in 1855 and leaves for Mellby in 1856. Gustafva returns in 1857 and then leaves again for Mellby in 1858. Both Sven and his wife were from Mellby, so perhaps Gustafva is sent "on loan" to Mellby due to her employers' connections. I could not find Gustafva anywhere in the Mellby records.