I know this is a really broad question. Been in a few of these situations but I think I could do better in the future.

She was a good lay and you'd like to keep the plate spinning, so...

How do you leave gracefully and with a good impression? Conversely, how do you ask her to leave if you smashed at your own place?

What's the best response to her inevitable follow-up text, i.e. "I had fun tonight." "I miss you already." "What are you doing Tuesday?"

When planning the next meeting, do you go meet her at a bar or try to get straight back into the sack?

Finally, the classic shit tests, i.e. "All we do is have sex." "Am I just some piece of ass to you?" "I want you to meet my friends."