Bathroom mirror fell off the wall!

We have a 2005 3326 TM. On this trip, the bathroom mirror fell off the wall! The frame fell apart. Luckily, the mirror did not break, because it fell off while the walls where folded down. The mirror was glued to the wall with silicone and the mirror frame was stapled to the wall. Apparently, the silicone did not adhere to the back of the mirror and the staples holding the frame were not adaquate. I have peeled most of the silicone off the wall.

My question is, had this happened to anyone else? Do you have a better solution to remounting the mirror to the wall so that this does not occur again?

genesc