If you have previously recommended this thread, you should see a tick / check mark on the recommend button. Click the tick to undo the recommendation (the tick may appear to change to a cross as you do this.) If you added a comment with your recommendation, you will need to delete that from your facebook wall separately.
I've only just seen this The oldest female character is more than a bit ambiguous but the dad is definitely a dad.
Another one here who tells their PFB that the bear just wants to play. We learned our lesson after reading The Enormous Crocodile <shudders at memory of removing imaginary crocodiles from toddler's room several times a night for a week>