I'm so sorry to hear that you were robbed and attacked! I'm glad you are OK. Would a gasket or something help? Like from the insulation department of the hardware store -- weatherstripping, I guess is what I mean?
Or a door that folds in half along its horizontal axis instead of sliding? You can make that from two pieces of glass joined by a special rubber strip (which you might be able to get from an aquarium supply place) or a hinge. Here's a site that sells such things:
http://www.jmkdisplays.com/hinge.html (they also sell clear acrylic piano hinges).
Here's a place that sells locks, tracks, etc. for sliding glass display case doors:
http://www.woodworker.com/cgi-bin/se...xe?CTLFIND=103
Or maybe you could buy some of these (
http://www.herpsupplies.com/product.cfm?id=02029024) and silicone the bottom part of it in, in a vertical position, then install a latch at the top edge and some weatherstripping or a bead of clear silicone around the edges of the moveable panel (not to stick it down, but to overlap a bit and make an escape-proof edge).
Good luck!