I'm reaching here but I'm going to say the cross, because of it's inscriptions was given to her when she became an initiate in the Franciscan order. The second medallion may be a St Christopher's medal and the tiny swatch of fabric in the back of the medal was swiped or had some other contact with his corporeal remains IE a bone a bloodstain his sneakers or other. That's what a relic is. Put em in a nice shadow box with a nice letter of remembrance and a photo of your family. If you still maintain the faith it could become a shrine for your folks.
Best wishes!