Spider Crack On Windshield

My sister has a 2008 Honda Civic. Its a lease.

The other day I noticed a tiny spider crack on the windshield passenger side. Probably a pebble or something bouncing up and hitting it while driving down the highway.

1. How can you prevent these things from getting worse?

2. How quickly do they get worse?

3. The windshield has the Honda dealers name and I guess tracking info emblazoned on it. Its not a sticker, its painted on there or whatever. If I don’t want to use the dealer to replace the windshield, is that something she could get penalized for, in other words, replacing it with a window that doesn’t have that info.

I’m not sure if the car warranty covers this sort of repair and I won’t go to a dealer to replace a windshield.

Thanks for any help.