Most Helpful Girl
Why not? It may be silly to wear some items of clothing that only look good on really young girls, but goth style, especially victorian and medieval, can look very feminine and elegant and can be adjusted to look professional as well, if needed. Dropping some clothing items as you grow older is normal, but you don't have to abandon the entire style.
As for being part of the scene, I assume you're not into night life every weekend or anything, I guess that stops being interested after a while (I'm 20 years younger than you and I'm already not that into it anymore) but when you feel like visiting some concert or some event that doesn't happen every saturday, go for it.
In my opinion, some older people in the alternative scene do look like a parody, and it's mainly because they're trying too hard to appear young. On the other hand there are some other older people who make the best both of their age and of their style. They're kinda like the role models in the scene, that's the way I see it. Most younger people in the scene wanna be like them when they grow old. :)