Fairy, you should not worry too much. One of my pp's sent me a letter with a picture of his son. The letter needed almost 4 week till I received it. It was just lost in the mail for a while. Usually his letters need only 5 days. So hold your head up! And even if the pictures stay lost, you are not to blame for this, just kick the ass of your mail man.

Your pp will understand what happened. Of course, it is sad, especially because he wanted some pictures back, but you can't change that you didn't received them till now. Just wait a while, I cross my fingers for you.