Once again Sasha has two choices - one less than Goldilocks - to find the right size chair to sit in.
Generally, a human adult chair seat measures (seat to floor) the same distance as an adult leg from just behind the knee down to the heel. The would be about 17 or 18 inches. If Sasha could bend her knees and sit in a child size chair the measurement from behind the knee to the heel would be about 4 or 5 inches.
Lots of beautiful chairs have been created for American Girl size dolls as well as many for the larger size Asian BJDs who are often 28 to 30 inches tall and would be about the size of a Sasha scale adult.
To be continued...