I really don’t trust “on delivery” for any job, especially for a new, out of state client.
There are some things you can do to reconcile this.
50% deposit.
Post low rez copies to prove job was done. NOT APPROVAL though because she has no right to “disapprove” a shoot IMHO.
She pays the other 50% and you ship.
50% deposit
Send P2 folders burned to discs after shoot.
Upon receipt of 2nd 50% you send her the P2 cards she sent you back (you hold P2 cards as collateral in other words).
I don’t see any reason to every hand shoot material over until paid in FULL.
There’s a difference between credit card and PayPal though. With credit card you bill it (number already given to you) upon completion.