Apparently, in the past, Karolina's parents made a deal with the Super Skrulls to have Karolina marry one when she got older. The Skrull who was to be her husband came to Earth to marry her, but she didn't want to go because she didn't want to go and because she revealed she is gay, but later changed her mind because the marriage would help keep peace between some alien nations and because the Skrull had no problem shape shifting into a female form to make Karolina happy. She left, and hasn't been back since, though we did get a glimpse of her life in space in the last issue.