It's possible that:
* There is a lesser-known actress with that name: There could be an actress named Jashan who has worked in regional cinema or independent films.
* You might be thinking of a different name: You could be remembering the name incorrectly or confusing it with a similar-sounding actress.
* It's a fictional character: The name could belong to a character in a film, TV show, or book.
Could you provide more context? For example:
* What film or show were you thinking of?
* What nationality is the actress?
* What kind of roles does she play?
With more information, I might be able to help you find the actress you're looking for.