I found out why - it's her daughter !!!!

The daughter does look like the mother, although Zoe Perry is prettier in my opinion evenif you compare them at roughly the same age. Zoe is also a bit taller, but similar enough. Now, the hot woman on the show is Annie Potts. 65 years old and still looks good for her age.

The MeeMaw? Right. She's for entertainment value - not realism.