to be honest mate.. get her in the gym and eating clean job done... no need for fat burners etc
make sure she does lots of cardio 4 days a week at the gym doin cardio and a few weights... 10mins every mornin on an empty stomach will work wonders aswell...
some of the girlies may reply and help
if u think she has a slow motabalism get her thyroid checked by the doctor...
3 stone is quite a big gain % wise to her original weight...
7 months is a fairly long time to drop some of it tho
if my girl put on 3Lbs there'd be trouble

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UKBFF southcoast 2008, O80kg Champion