My girlfriend was doing medical transcription for a while before going back to school. It's boring, but it's a somewhat skilled position and thus the pay is decent (my girlfriend topped out around 2k per month). Your wife will have to get a medical transcription certification first, though.

Here's the company she worked for: http://www.nuance-nts.com/ - they're the same people that do Dragon Naturally Speaking and Siri. Kinda weird to be training algorithms that are replacing you.