At the heart of the eukaryotic cell-division cycle are the precise duplication and segregation of chromosomal DNA. These two events take place at distinct points of the cell cycle: DNA is replicated during S phase, and then the replicated DNA strands are accurately partitioned to the two daughter cells during M phase.
I think the answer would be to tell her friends how much she likes being on the team because then they can know that it's something she likes to do and hopefully they'll respect that and not make fun of her.