Help needed with Ethical question

Can anyone please help with this on.All names have been removed to protect the innocent and guilty.I have this "FRIEND" and my friend lent an UNPUBLISHED script (that my friend had been tracking down for 6 years and is still unpublished [I think]) to a person,my friend was very reluctant to hand over the script because my friend was going to do this play quite soon.Now, the person my friend lent the script to said that they were going to do the show ONLY in the country as not to take away audience and so the show would be "fresh" to a metro theatre going public.BUT it has come to my friends attention that this unpublished play is beingput on very, very, very close to the home theatre of my friend, meaning thatmy friend can't do her production.It seems to be a direct "stealing" of audienceis my friend just stupid for lending the script or does she have a genuinereason to complain. is there anything my friend can do ?A. Friend