Can someone clarify this for me... about Ranma's teacher (Hinako), is she 
a kid or an adult? Or does she just change forms when pressure is applied 
on the appropriate pressure points? I've seen a couple of fanfics 
mentioning her but I still can't get this straight.

She's in her mid twenties... When she was a kid, Happousai did this wierd
pressure point thingy on her, and taught her how to do the special exercise
on how to get better, as she was sick. When she uses the Happou-Go-En-Satsu
she gets the energy she needs to get well, which helps her weakened body
to grow. As a kid, after draining energy, she looked the same, just not as
weak. Her body has stayed the same age as she was when she was in the
hospital, until she drains the energy. Then she grows to her real age...
She loses her true form when she loses the energy... Either it just escapes
from her body naturally, or she uses the Happou-Change-Exchange to blast
people with the stored energy.

Kun-chan...