When asked about her relationship with her siblings, Wilson confessed she didn't even know how many half-siblings she had.
"I will say I do not actually know how many siblings I have, if you include half-siblings," she said.
Unlike her father, who she claims was mostly missing when she was growing up, her mother, Justine Musk, has been supportive of her.
Justine is Musk's first wife; he has 14 children with four different women.