I don't live there, however I can offer a few suggestions...
If she belongs to a church, she can speak to the church leader and ask that she be introduced to the members during the next service. Many have social get togethers after the service, she could attend those. Children make friends quickly, and when they do, you soon meet the parents.
She could volunteer at school/hospital/City Hall for a few hours a week.
The kids will get involved at school and make friends....she needs to make sure she offers to help with plays, fund raising or whatever the group needs.
Get to know her neighbors. If they don't come to greet, she should, with cookies in hand.
Many cities have Newcomer's Clubs.....contact them.