Justine Wilson, now 52, first met Elon at Queen's University, and had no interest in entering in to a romantic relationship with the South African international student who was a year ahead of her.
Despite the devastating loss, Justine and Elon continued growing their family and two months later began trying for another baby through IVF.
Speaking about their first interaction, Justine explained that Elon had invited her out for ice cream after pretending to have met at a party previously.
Elon Musk, 53, is almost as well known for his huge brood of children as he is for his business ventures and interest in space.
Last year Xavier came out as transgender and changed their name to Vivian and removing Musk as her surname, revealing she was distancing herself from her father.
