The ornamental design for a shower shelf with mirror, as shown and described.
FIG. 1 is a perspective view of the shower shelf with mirror;
FIG. 2 is another perspective view of the shower shelf with mirror of FIG. 1;
FIG. 3 is a left side view of the shower shelf with mirror of FIG. 1;
FIG. 4 is a front view of the shower shelf with mirror of FIG. 1;
FIG. 5 is a right side view of the shower shelf with mirror of FIG. 1;
FIG. 6 is a rear view of the shower shelf with mirror of FIG. 1;
FIG. 7 is a top view of the shower shelf with mirror of FIG. 1;
FIG. 8 is a bottom view of the shower shelf with mirror of FIG. 1;
FIG. 9 is a perspective view of the shower shelf with mirror, showing the mirror in an alternate position along the front of the shelf; and,
FIG. 10 is a left side view of the shower shelf, showing the mirror in alternate angled positions relative to the shelf.
The design consists of the feature of shape, configuration, pattern, and ornament of the shower shelf with mirror shown in solid lines in the drawings. The dashed lines shown in the figures represent portions of the shower shelf with mirror that form no part of the claimed design. The dash dot dash lines shown on the shower shelf with mirror represents alternate position along the front of the shelf and form a part of the claimed design.