Self-impreg PC parent extendedFamilyWidgets update

If the PC's mother and father are the same slave, the PlayerFamily widget now reports that instead of implying the PC has two
parents.

src/utility/extendedFamilyWidgets.tw

@@ -684,7 +684,11 @@
 <<if $children.length > 1>>
 	<br>Your parents are @@.lightgreen;$children[0].slaveName and $children[1].slaveName@@.
 <<elseif $children.length > 0>>
-	<br>You know one of your parents, @@.lightgreen;$children[0].slaveName@@.
+	<<if $PC.father == $PC.mother>>
+	    <br>Your parent is @@.lightgreen;$children[0].slaveName@@, who impregnated herself with you.
+	<<else>>
+	    <br>You know one of your parents, @@.lightgreen;$children[0].slaveName@@.
+	<</if>>
 <</if>>
 <<set $children = []>>