Join professional associations, working women groups/clubs, attend career fairs and open houses....you have to make work contacts the same way you'd make new friends in a new city. If you belong to a church or a beach club or other such things, ask the members to help. Ask people in your neighborhood for leads and introductions. If your kids are in school, network with their friends' parents. You have to build those contacts one at a time, but it requires getting out of the house and becoming active. Is it easy? No. Is it fun? Not for everyone. But does it produce results? Yes, especially if you really put your heart in it.
Not sure what city you're in, but you can try joining the free network on my site (network.womenforhire.com) to search for women in your city as a starting place.