This is the opposite of "gifting". Instead of giving you something that you can use, your friend just used you to dump some trash that she does not want and hoped to get your "ren2 qing2" in return (gift or favor?) one day. Just regard them as trash. Mark a negative "ren2 qing2" for your friend.
Just regard them as trash. Mark a negative "ren2 qing2" for your friend.