Is it normal i don't like it when someone looks much older than their age?

There are a bunch of celebrities out there whom look about 10-30 years older than their actual age but in reality, there are just as many if not, more (probably a result of no airbrushing/professional makeup artists on call).

But yeah, someone I work with is 19 but she looks about 45 and I'm not even joking. I didn't even know her age until today. I'm in my twenties and when she came in, I immediately saw her as about 45. I wasn't the only one as everyone else assumed the same except I guess the manager as he must have known her birthdate unless he didn't look. We all treated her like she was our older sister or Mother and today, at work, someone said, "you're cool, you're like an older sister to us". This was a 32 year old who works with me who said this. The girl then laughed and said, "I think you mean that the other way round because you're probably older than me".

After she said that, three of us laughed and said "you wish" and she got annoyed, we could see it in her face. We were only kidding because we still at this point, assumed she was in her mid forties. She then told us she's a 90s baby and is only 19. We didn't believe her at all because this girl has about 50-100 wrinkles all over her face on her eyes, on her mouth, on her forehead, her cheeks, her neck even has a lot of wrinkles and her hands are very veiny.

Anyway, she showed us her license and we all apologized and she then said, "I know I look older than 19 but I didn't think I looked that much older" and we laughed with her..but then behind her back, we still didn't believe it! But it's true, this girl is genuinely only 19.

Now it annoys me because I can't believe someone could look 25 years older than they actually are and have so many wrinkles and still be in their teens.

One of my coworkers thinks it's because she's only 97 pounds and we're thinking maybe she was once really heavy and lost it rapidly? We can't think of any other reason as to why she has so many wrinkles and sagging skin. She even has 'old people' freckles and an older voice!