Are her branches too wide to grip or too shiny? Or was she trying to escape from you? Amy used to just run whenever you looked at her - she still does only not so fast!

They tend to just run blindly at that age when they are scared or trying ot escape. Amy ran off my hand not lon after I got her. She was fine but I felt so guilty! Falling from branches etc is an escape mechanism, and they inflate their lungs just before impact to cushion their fall. As long as she is acting normally and eating/drinking ok then she should be fine. Just make sure that she hasn't broken anything though. Are you dusting her food with supplements?