I let her sit for just a few minutes. You could probably use plain old hand sanitizer, too. That's usually 60-70% alcohol, though I'd be a little worried about the symbols... has anyone tried it??
I use 70 and 90% rubbing alcohol on my ponies. 70% does nothing to the symbols. 90% might if you let it sit, rub continuously, or let it sit in it. Though sometimes I find it's not quite strong enough. I also use acetone nail polish remover (works much better) and sometimes Windsor and Newton brush cleaner. I use that stuff on my ball joint dolls to wipe faceups. But I also find it's good for removing stuff off ponies too. Just make sure you wash them with soap and water.
But yeah, I don't get that stuff anywhere near painted areas because it will instantly remove paint.
Anyway, for cleaning painted areas, I stick to 50 or 70% rubbing alcohol.
Along a similar note, at least dealing with rubbing alcohol: I'm sort of experimenting with a sun-fading method at the moment. I covered the symbols of my yellowest, highlighter covered ponies (Raincurl) with acrylic paint. Then I let it sit outside in the sun for days and days (head had to be removed to clean tail rust, and it's in a plastic baggie hair covered and protected).
On testing it, I found that 70% alcohol would remove the paint I put on, but not touch the symbol paint. But to be safe, I also sprayed her with a clear coat first for an extra layer between the paint and symbols. (The stuff I use is from VOLKS for ball joint dolls) Once she's done, I'll post whether it works or not. XD