When a gal says she is available from x to y (ex:10am-8pm) on her website, does that generally mean the last appointment has to start by 8pm or end by 8pm?   In other words, if I want a 2 hour session does than mean I have to start at 6 and be done by 8 or start at 8 and end at 10?

Just trying to figure out what the "norm" is, acknowledging that every gal is different and while most ladies do one thing, she could be the exact opposite.