Your full of herself stepsister, Sienna.

This bit includes scenarios such as:

1. Her chilling in the living room (wow)

2. Sleepover between girls (wow again)

3. Power outage

4. Help with "homework"

5. Comfort her after a nightmare

Also some more later.

6. Straddling during argument

7. Sharing one bed

8. Morning wood tease

9. Shower tease

10. Jealous

(brick by brick)