A child conceived nine months prior to its* father's death was nevertheless alive (in utero) at the time of its father's death.
A child conceived in vitro after the father's death - i.e. a child whose father was already dead at the point in time of conception - cannot, in any sense of the word, be regarded as a survivor.
Otherwise, I could claim to be a survivor of the sinking of the Titanic.
Besides that simple logical objection, there's also the fact that the mother knowingly and willfully conceived a child whose father would not be there to nurture, support, and raise it.
Regards,
*By the way: For the record, I am using the neutral personal possessive pronoun (its) not because I doubt the personhood of the conceived child - I don't - but rather because, generally, its gender is unknown before birth.
Is your problem with this the fact that it was only the sperm that was saved? what if a fertilized embryo had been frozen and implanted 2 years later?
Sorry...
Regards,