"She's not available."

This afternoon, as I was cleaning out one of my cabinets, the phone rang. I couldn't get to it right away. When I finally checked the number I saw that it was Paul. I knew it was his day to have the girls and thought there might be a problem, or that he might be late to pick them up, so I called back right away and Helena answered the phone. ? ? ? She proceeds to tell me that she is a car rider today. They were going to pick Rease up next. Why didn't I answer the phone? What was I doing? She told me left a message. Hmmm . . . . . So. . . after our brief conversation I decided to check the message.
Here is what she says:

"She's not available." (She must be telling Paul this because I hear him say in the background to leave a message.) So she proceeds:
"Mom-mom, I'm a car rider today and we're going to pick Rease up now and we're gonna stop by your house later. I hope you're available then. Bye."

Okay, then. There you have it.