It's very questionable that a) she under insured the item and b) didn't specify that it requires a signature. For all you know she could've sent you a brick.
AFAIK all UPS deliveries require a signature unless you sign a waiver with UPS which is kept on file. If you haven't done so, then obviously the driver cannot leave the package without a signature according to the rules they are supposed to follow.
I don't know who's more at fault, the seller or the UPS driver, but IMO the burden of proof is on their hands.
Good luck, keep us updated.
AFAIK all UPS deliveries require a signature unless you sign a waiver with UPS which is kept on file. If you haven't done so, then obviously the driver cannot leave the package without a signature according to the rules they are supposed to follow.
I don't know who's more at fault, the seller or the UPS driver, but IMO the burden of proof is on their hands.
Good luck, keep us updated.