That was over 25 years ago in 1997.
Today she is 53, and has starred in 59 movies in total, 39 since Volcano was released.
In Volcano, I think Anne Heche looks:
Volcano scores 5.3 out of 10 on The Movie Database.
Anne Heche's first acting role was as 'Marie' in O Pioneers!, released in 1992 when she was 22.