>>103953214A guy some threads ago said that Johanna got pregant when she was majoring in graphic design, baybe during her last semester, once she finished her major he went to hier father's cabin because she was afraid of how her family and friends would react about it.
She stayed there for several years, taking care of her daughter and only going to Trollberg when she really needed until the elves forced her to move to the city.
I don't want to discuss shitty theories but that actually it have some sense. Johanna is a very suspitious character, because sinse they moved to Trollberg we haven't seen any of their friends, besides Frida's and David parents. Johanna grew there, but she doesn't have any friends of family from her life before Hilda.