Actually, there was a young mom in Oklahoma who did just that and the dispatcher said she couldn't tell her it was okay to shoot him. The dispatcher did tell her to do what was necessary to protect her 3 month old from the intruder and the mom did shoot him.
I am talking about TX specifically. Recently a guy shot an escort in TX because he gave her money yet she didn't have sex with him. He was found not guilty.
Sounds like in TX you can pretty much shoot anything that moves if that anything is trying to take your property or represents any danger to you.