Thanks so much for replying! Yes, we are hot and humid here. I went out to her house Friday to get a second look at the spot and to discuss what I've found out. She likes the idea of yuccas, sedums and hens and chicks, they all grow well here.
@DirtDolphins, any other plants that would do well? Summer temps are in the 90s, we do have winter cold, but usually fairly mild, it can get into the twenties, but rarely the teens anymore. Daytime winter temps usually in the 30s to 50s.
We do get a lot of rain here compared to Western states.
The soil does drain very well, it's kind of sandy.