If you purchased on PayPal or USPS, you can check the shipping confirmation to see where the package is--it may have arrived at this point. Your buyer is being unreasonable to expect the item to arrive so quickly. If she paid you for "goods" and not a "gift" AND you did the shipping label through PayPal--it will show when the item is delivered because of the automatic shipping confirmation in your final price. PayPal will back you in the dispute, no problem.
This is the reason that I only do PayPal shipping and receive payment for "goods." It's worth the charges to have the shipping confirmation and PayPal support--just in case.
3a (Corkicelli), highlighted, fine, low porosity
modified CG, since April '07
CG since 3/11/08
HGs: Curly Kinks Satin Roots, Curlycue ReNew and Coil Jam; homemade FSG and okra gel; soap bars; DM MiraCurls Curling Gelly; UFD Curly Magic; Shescentit LIs; Sevi conditioners; Botanical Spirits Puree, CJ Repair Me