My fiancee and I have been Paleo for 6 months now.  Other than some occasional cream in coffee, dark chocolate, and drops of black berry jam in cookies we make once in a great while we are very strict.  I would say my fiancee is much more strict.  I have been losing weight at roughly 8 pounds a month, but she hasn't really lost much in the way of inches or slimming and is struggling to understand why.  We probably sleep 7-7.5 hours a night so I know we could sleep more, but we both do the same basics and yet I am succeeding where she struggles.  Any suggestions?

Just FYI
Most of our meals involve:

Lamb, sausage, chicken, bacon, or fish
Chard, Chinese Broccoli, onions, mushrooms, peppers, and occasional sweet potatoes

Thanks for your help!