Maria owns a condominium in Kansas City where she stays periodically. She also keeps her irreplaceable collection of Mayan and Aztec jewelry there. Last year, two attempts were made to break in; they almost succeeded. The condo cannot be made more resistant to break-ins and the jewelry cannot be insured. One night, Maria awakes to the sound of someone entering and snooping around the spare bedroom which is where she keeps her jewelry. She grabs the .38 caliber pistol she keeps in her nightstand and quietly enters the spare bedroom where she shoots the intruder, killing him. Was Maria's use of deadly force lawful? Explain.