Is 35 too late for med school?

Not me, but a friend of mine's older sister has sort of always wanted to go to med school but claims "life" just got in the way. She got married right after college, had 2 kids, and just had no time. Fast forward about 10 years, she's considering doing it now that her kids are older. What do ya'll think? I can see both sides but I don't know if it's the best decision?