take her slow man. get on a stationary trainer or spin gently, high cadance on the road. Avoid hills until you feel your are healed. I don't know the extent of your injury but the pool has always helped me recover from broken bones etc in the past. The cold water helps reduce swelling, and is easy on your joints. IIf your able to get into a pool, check out a kickboard and suppory your body while kicking from end to end. Get your cardio up in a save environment, then test yourself out there on the road once you feel better.
good luck