No matter what, the flu is not fun to have. But on the bright side, now she’ll have many years of immunity against this strain.
Don’t let the Chicken Little Media scare you. Assuming she doesn’t have any health issues that would be magnified by the flu, she’ll be fine.
Since flu viruses mutate rapidly, that may not be true. Notice how seasonal flu mutates so much they have a new vaccine every year. And often it mutates so fast, the vaccine misses the target - like this year, and a the last couple of years, IIRC. Of course the seasonal vax is trivalent and covers three strains of flu (two As, one B) and the Bs to my knowledge don’t mutate rapidly like the As. I could be wrong about that. But this year the main A strain is off target.
But since swine flu pretty much dominates seasonal flu, the regular flu vax won’t be worth taking anyway (IMO).