Email her and ask.  It's certainly one thing for providers to be upset about people asking for repeats of information that they've clearly provided, and it's also fine for providers to be upset about unethical websites stealing their ads, but I'm fairly certain that didn't happen here -- Eros is a major site, and wouldn't run an ad that wasn't requested.  Instead, there's a direct contradiction between her personal site and the Eros ad, which you noted.

Since her site directly contradicts the Eros ad, I'd bet that she will only offer the 2-hour appointment, but it's certainly worth investigating.  Given her reviews, it certainly looks like she'd be worth the 2-hour rate!

I've seen her.  The minimum is 2 hours.  Well worth it!