You may wish to join some of the local Moms groups out here - I found them extremely helpful when our family was relocated down here last summer.
Here's a few I found handy:
Moms Club - Flower Mound Southwest.
Greater Lewisville Early Childhood PTA
Feel free to email me directly for more info - I know at least one of our members who lives in your area, and might even have her daughter in your daughter's class at Old Settlers!
Best of luck settling in - I have been here a year now, and we really enjoy it. I've joined all three groups listed above, so I have ample opportunities for Mom's Night's Out, and other activities!