...all the companion could say is this:
"Hi, I'd like to discuss the weather from *time* to *time* today. Contact me at 555.555.5555 or lickitup@gmail.com."
No pics, no ads, no links other than what is in her signature line. She can post her contact phone number and/or email ONLY.
Then she's just a lady, ready to discuss the weather, for a certain number of hours.
And anyone posting anything than a weather discussion gets warnings/infractions until they get it figured out.
I mean, it sounds simple in my mind but perhaps I'm underthinking it...