Lost Long-Haired Chihuahua

I'm sure you've seen the signs in the neighborhood - but I lost my long-haired female chihuahua on 6/3/13.  I had just moved and she snuck out while I was not home (unbeknownst to my roommates).  She is about 12 years old and not friendly with strangers - she's very scared/skittish so please just call me if you see her or know anything.  Thank you.