Nice shots. I, too, like the mirror shots. I take a mirror with me and place it on a stand before the girls start getting ready so that they have an extra mirror to use (sometime the only mirror) while they are getting ready. Then I have it for bride, bride and girls , or bride and mom shots, etc.
Straight from the user manual of my Canon T5i: "Perform low-level formatting if the card's recording or reading speed seems slow or if you want to totally erase all data in the card." "When the card is formatted or data is erased, only the file management information is changed. The actual data is not completely erased......execute low-level formatting to prevent any personal data from being leaked."