I am actually shocked at the number of people here who think Bob and Kayla wrote those shit letters.
To be clear, I don't think any of the opinions I am seeing here about them are wrong,
per se, but if Nick didn't flat out ghostwrite them over their signatures, he definitely had "significant input." They ooze with his classic narcicism. Reading those two letters felt like watching a hostage tape.
I can totally imagine him over his wife's shoulder as he writes "hers":
Nick: "Okay, now talk about how awesome I am for driving the kids everywhere, and how I fight for truth, justice, and the American way. Then mention that Aaron ate my goo."
Kayla: "I am NOT mentioning Aaron's goo in a letter to the court!"
Nick "Fine! But at least mention how I'm an excellent cook!"