Use a hair dryer to warm her, NOT hot water.
She's a Surprise, she has chartreuse hair which will bleed if boiled and will make for a very manky pony. Don't get her wet unless it's cold water or cleaner. When you go to clean her tail, remove it completely, clean the tail and let it dry very well before replacing it.
I just got in a bait Honey Comb with a mohawk and I just completely removed all of her hair before putting her down for major cleaning. I had planned to rehair her anyways ( she's going to be a custom Surprise. I'd use Surprise, but Surprise yellows really bad and cannot be sunfaded without burning, but Honeycomb is the same color and everything but her plastic is a different batch and she can get dingy and the such, but she's sunfadeable ) so no biggy, but any ponies with the chartreuse hair, nirvana or not, are the bane of my existence even though I have a Surprise army.