Sue her for $1500.
Plus the labor to reinstall them.
I'd say at current Union rates, that would be about $5,000.
Convict her of a felony. 30 days in jail, suspended. Charge her court costs plus $1500 (which is to go to the RNC to use as they see fit). Then she must purchase 15 new signs at $100 each and re-install them. Then probation through November 2, 2004.
I am not happy with charging replacement costs, assuming the individual even gets caught. No real deterrence.