fyi on clowns
Your fish is a female due to the large size. I am not sure how big males with mates get , but I am guessing yours is alone in the tank.
The best you could ever do with her is find a very small fish which has not changed sexes to mate with . Doing that would be highly unlikely to work with a maroon, but it is possible that she would accept him with a lot of work. Maroons are the most aggressive clowns.
If clowns are paired with a female there will be a smaller male and a female that grows larger and larger.
The male can even change his sex to a female if he is left alone in the tank and then he grows larger. Females on the other hand cannot change sexes once they become a female