"Significant coverage" addresses the topic directly and in detail, so that no original research is needed to extract the content. Significant coverage is more than a trivial mention, but it does not need to be the main topic of the source material.
Since she is your family member, you're asked to disclose that you have a conflict of interest:
https://en.wikipedia.org/wiki/Wikipedia:Conflict_of_interest
But the answer is yes.
https://en.wikipedia.org/wiki/Wikipedia:Verifiability#Self-p...