The 1 Executioner posted...Do you really think secret service doesn't come with the stress? Most of the women in my medical school is about 25ish (Sherry's age) and they all look 8 years older. We men are in our 25s too but we look even older than the women.
Stress = older looks. This is my best explanation why Helena looks older taking into account her job.
That's some nice unscientific BS you have there.