I just finished watching this short program on Anton Chekhov and his sister Marie (he calls her Marsha).
It was very interesting.
However, it takes place in the time leading up to Chekhov's death on July 1, 1904.
Anachronism alert! The phone that they are using has the date 1910 on the back of it.
Maria Checkova lived to age 93 and died in 1957. She never married and devoted her life to preserving her brother's writings.
I had to read both The Three Sisters and The Cherry Orchard my freshman year in college. I hated them both. LOL! I guess I would probably see them differently now, but at 17 I thought they were boring.