Feedback requested by Seller - WWYD?

[notso]

I bought a set of things on Ebay, as a buy it now, the description was 'great used condition' and said part of it was faded. The price was much cheaper than other sellers despite fading.

Took ages to arrive, though I was contacted with an explanation of sorts.
It was really badly packaged, really dirty, smelled like it had been drenched in air freshener, there were some marks and fading which weren't listed and have not washed out.
Also an item the seller said after the sale was brand new was obviously not brand new.

I didn't leave any feedback as wasn't happy with the above but I know the price was really good so wasn't interested in complaining and all in all once it has all been washed , I can still use it.

Seller has contacted me saying they know I have received this and can I please leave feedback, what should I do?

Say you had issues with the items but you don't want to pursue, so you feeel the fairest thing is to leave no feedback.
Basically what you said in your OP

Thanks, that was my first thought but am a bit worried she will message back asking what the problem was, can you tell I am a wimp at complaining?

Feedback is optional, I would not reply to a message like this.

I would leave a positive or neutral feedback with something non committal like "Items received, thanks" and mark her right down on the stars. She did ask, after all.

I would leave positive feedback as you have decided not to do anything but write honestly that the condition was worse than described and why.

If everybody just didn't leave feedback when they had a slightly bad deal then we wouldn't know which sellers to be wary of.

I would ignore it.
She's not going to come and get you is she?