Her limits, and her right to end a visit
She decides what a session includes, states her limits when she arrives, and may decline at the door or end a visit at any moment without giving a reason.
What a session includes is her decision. At the start of the visit, she says in her own words how she works and where her limits are, and they stay where she placed them until she leaves. The house does not decide any of this on her behalf, and a guest cannot negotiate them away.
Declining and ending
She may decline a booking before she sets out. She may decline at the door. She may end a visit at any moment. She does not owe anyone a reason for any of those decisions.
When a limit is pushed
Where her safety or her comfort is not respected, or a limit she has named is pushed at, the visit ends there. The fee for the reserved time stays due, and nothing is added to it. The time was held for you, she travelled to reach you, and the reason the visit ended lies on the guest's side of the room. A short internal note may follow, as described under false bookings.
After a night out
This is the entry that matters after a few drinks. A guest who has had wine with dinner and listens when she speaks is nowhere near it. A guest who cannot follow a conversation, talks over her, or treats her limits as a starting point is close to it, whatever he has drunk. The guide to courtesy after a few drinks covers the habits that keep a guest well clear.
A guest ending early
A guest may also end a session before the booked time for any reason. The fee for the reserved time remains payable in that case too, and nothing is refunded.