Beautiful Girl! I would say she is more then 5.5 feet already though. Beauties have long tails that girl is probally easy over 6 already. Don't worry too much either on the 11 feet thing, rare for a girl to ever get that big. She will probally top around 8-9 no matter how much you feed her unless she has really big genetics in her background. How much you feed her will only effect how fast she gets there.

Nice viv too! That should be all she ever needs,