Nice find there! The parts on the bike are very clean. The Kool Kitten with that logo is an early version I believe. I bet that would be a $350-450 bike to the right collector. The Kool Kitten seems to be the most popular girls muscle bike out there right now, a few nice bikes have been floating around the internet lately.
However, like all girls bikes it seems, the parts on that would be worth way more than the whole bike. The front wheel is the same as the boys Huffy Slingshot, the fork also, and those two parts alone might bring $150 each or more. The seat looks great too, and the guard has value.
I would keep it together because it is a great little bike, but if you sell it, hopefully it stays together and isn't robbed for parts.