Thank you for your questions about donations. We receive many donations through PayPal, there is an "in honor of" section where we can keep track of donations for a specific person. We also receive a lot of donations through the mail, these will usually come with a note that assists us to know who the donation is in honor of.
However we receive donations almost daily that have no designation. We don't know who these donations are for and there is usually not a way for us to track down this information.
Many families will send a request for us to send them a list of donations for their loved one and an address where they information can be sent. Unless we have a physical address for the family (or e-mail address) we don't have any way to contact the family and let them know of the donations. I hope this answers your questions.