The point is not the source of where you heard it, the point is that you find it unusual for a father to tuck their children to bed. I understand exactly what you're trying to say, that is, why Dad is the one tucking their children to bed. Why not Mommy too?
When MK said (paraphrasing), "When Dads tucks us/me into bed each night...", does not necessarily mean that Dad is the only one to tuck their children into bed. And, even if he were, I see nothing wrong with that. Perhaps it was customary for this family for the father to tuck their little ones into bed. I know it's a bit unusual for only Dad to tuck them into bed, but not abnormal. Perhaps what MK meant, "When Dad kisses us good night at night..." instead she used this ready-made idiomatic expression to express her thoughts. Remember that a 9-year-old girl does not distinquish between "to tuck someone into bed" and "to kiss someone goodnight."
Still, perhaps it was customary for Ed to be the one to read a story to the children or a passage from the Bible. I just don't find anything unusual about MK's statement, much less any hanky-panky about it.
No, I'm not Sherlock. I dont know who Sherlock is.
If you knew what lakey thinks of Sherlock you'd know what a slam this accusation was intended to be. You must be pretty smart and a clear thinker if lakey is comparing you to me, keep up the good work. If they ever ask you if you're Jolly Green you'll know you've ultimately ticked them off.