Help for a single mom trying to support her family

A reader writes:

I’m trying to support myself and my kids with proofreading and editing work (and am training to become an indexer as well). I’m sure you have your own proofreading and editing resources through your publishers, but if you have any advice on breaking into the business or making publishing contacts, I would love to pick up what wisdom I can!

I got nothing since I don’t know how published hire such folk, but I do know publishers who do.  I would particularly appreciate it if any of my readers out there in the world of publishing could leave some info in the comboxes for her. I will also poke around in email with some of the people I know and see what they know.  God bless you quest to support your family!