Should I re-list?

I have sold an item and has not been paid for as yet - its been about 1 week. Had a look at the buyers feedback and has a total of 26 feedbacks that "Buyer has not paid etc". Interestingly enough what she bought from me she seems to sell - the same brand and sizing. Maybe she buys similar to increase possible bidding activity/better odds of her items selling???

Why this buyer has not been blocked/deactivated from Ebay is beyond me and Im not talking about just not paying for my item (as its only been a week and there is still a small chance) but based on her previous activity/non paying - Ridiculous!