Another tip is to remove the wheels from your bikes. Also, I lock bikes together. It just might only make it 5% more difficult to steal them. But that 5% might be the difference! Someone broke into my friend's garage and stole 3 bikes. They didn't take the most valuable bikes. They only took the bikes that had both wheels on them.
Man, Veronica. There's nothing else to say. Nothing like kicking someone when they're down! Just when you're starting to get back to a normal frame of mind... WHAM! I feel so badly for you!
But maybe sharing your experience with all of us will make us more aware. I had been getting rather careless and lazy about setting the alarm on my house. But you bet I set it every time now!