How to keep a praying mantis alive in winter?

I have had a praying mantis since October 2010. In January 2011 the praying mantis is still with us. Although she has slowed alot over these past

few months she continues to eat well. I have been feeding her lunch meat,

turkey, ham, roast beef, chicken, bologna and scrambles eggs. Recently she

hasn't seemed to be able to chew the solid food as she had so I am now feeding her meat based baby food. She take water from a baby spoon.