IDK, my feeling is you owe FIL nothing. He is not your W or her L and not entitled to any information about you whatsoever. It's none of his business. Let him know in a tactful positive manner.
maybe something like:
"I appreciate your interest and concern but this is between me and W".
Me:49 W:45 M:19 T:22 EA confirmed and ended 8/2014 S:19,17 D:9,5