Because I knew the secret, and because I was lucky.

[He kisses her hair again in the hopes of mollifying her.]

I was on a mission where we infiltrated a droid production facility and made some stealth modifications to create defects in some of the droids. You can exploit them if you know where they are, but there's no guarantee that the droids coming for you will be some of the defective ones. It might not work at all.