L.N.
I was in the same situation about a year ago. I found a group called Far North Dallas Early Childhood PTA (FNDECPTA). We have working moms and stay-at-home moms. We have family parties (i.e. Valentine's Day), moms nights out, playgroups based on your availablity and children's ages, meeting monthly where a speaker is brought in (i.e. a counselor was brought in to talk about discipline), and a monthly children's activity (i.e. pizza party at bounce house place). Check us out at fndecpta.org.
If you need more information or have more questions, just let me know!
L.