Refunding will not change the feedback which is the real problem.
While eBay doesn't use FB to assess member accounts, new customers will.
Look not at her FB Received , but at her Feedback Left for Others.
Does that indicate changes or removals? If so this may well be a tactic to get free stuff. (For five bucks. Sheesh. )
All your patterns are described as Used.
It may help if that is in the Title as well as in Item Specifics and in the Description.
You can't say it too often.
Many pattern sellers state "uncut unused factory folded" for old patterns that have not been used, even if the envelope is scruffy.
Patterns really require a status other than New or Used, since many have been purchased and then never touched again.
You could add a Response like "I regret you were not happy with your purchase. Please return it for a refund."
If she opens a Dispute. "I regret you were not happy with your purchase. Please return it for a refund."
If she opens a Dispute, you may have to send return shipping. If she doesn't use it, you win the Dispute and eventually the shipping will be refunded.
