Since I changed my setup and started feeding me girl a proper sized meal she's gone up over 40g in 3 weeks(190-232). Granted, alot of that is probably poop weight but she's pounding down 20oz adult mice every 5 days. I finally found some smaller frozen rats around here that I'm going to try and step up to in a month or so.
edit: Just order this scale from reptile basics. It goes up to 7000g and has a nifty bowl for smaller snakes. That's the one I have and its great.