Who was that foul on

[tjchamp]

This happened at a game last night. Official comes to table and says "Green 51" and indicates the type of foul, and 2 shots. Green coach stands up and asks who the foul was on, and ref repeats green 51. Coach says, I don't have a 51, and sure enough he doesn't. Now the refs are in a pickle cuz they really don't know/remember who the foul was on. So, they picked a girl that was no wheres close to the play. What should have been done in that situation?