She is pretty far gone, when you say "in terms of monetary value" I guess it depends on if you mean for reselling or cost to restore and keep for yourself. Seeing as WW is a fairly common pony I think if you were looking to sell her you would get more if you did a really good job deflocking her than reflocking her. Finding a nicely flocked unrestored WW wouldn't be too hard but there is a niche for deflocked SS and I think given that she isn't too HTF you might get more if you repinked her hair and did a good deflocking. Collectors looking for NSS or alternatives to some foreign releases would probably be more interested then someone buying a reflocked fairly common pony. Now, if she were a SS Twilight or Crumpet I would probably lean towards reflocking.
However, if this is for you to keep, I would say the cost to do either job is probably about the same so it's more a matter of your own preference.
In her current state I don't think you'd get much for her. As is you're pretty much looking at close to bait price so if you want more you'll probably need to do some restoration.