Send her the invoice for the new purchase and tell her that pick up is not an option and it was not in the listing.

As she has won the item she can NOT retract her bid.

Give her 4 days to pay and if she does not then open a dipsute.

DO NOT let her waste any more of our time and add her to your blocked bidder list now before she causes any more damage.

She sounds like a right pain in the proverbial.

If you have opened the other dipsute then she might not want another opened so she might pay up.