Thanks for the beautiful pic thomas.
A picture is worth a thousand words as they say. Captures Lilian very well.

2 rounds?
Here is a general guide ... but there are always exceptions.
30 mins - No.
1 hour - Yes (I always do 1 hour bookings).
45 mins - most girls will give you two rounds. It's a more a question of whether you can manage 2 rounds in 45 mins. But if you can do it then I think most of the girls will say yes.

And the bottom line is whether you came once or twice or not at all, when the time is up, the time is up. The session is over.