Not enough and no she is not worth it unless you have enough resource to actually make use of her.

I'd recommend you to spend in this event if you need med refine rune. Farm em up and stack them for next circle of refine event or use it when you see fit. About Tenten? No. She is not good and hard to make use right now, beside that she will come back eventually in later events.

don't bother with thread, you will get enough of them from SA