Maxie Masters's siblings

Maxiassa and her siblings had mothers and fathers. After she fled Gendar after the death of her friend, she knew she could never see them again. (PROSE: She Came From Another World!) According to another account, she only had one mother and one father and no siblings. (AUDIO: Maxie)

Behind the scenes
It is not specified in PROSE: She Came From Another World! if Maxie's family is polyamorous, or a series of step-parents, or if Gendar biology is complex.