I've been wondering about this every night, but only now did I ever ask this on the internet.
For those who writes novels with main genre as comedy. Do you actually laugh (thinks it's genuinely funny) at the joke you wrote or just "meh, somebody probably find this funny"?
A joke is a joke because it's funny. If there is not enough information, people won't understand what is funny about it. If there is too much information, the joke gets diluted by the abundance of information and ceases to be funny. That's why what is funny to you may not be funny to others.
Therefore, Ai-chan never set out to be funny. Ai-chan just writes as the lady specifies and let it sit. If Ai-chan goes back to it and thought, "Hm, this is bland." Ai-chan would change it, either to make it funnier, scarier or sadder.
Ai-chan does not actually laugh at Ai-chan's own jokes (Ai-chan has a cute depression, so when Ai-chan laughs aloud, it's because Ai-chan has a mental imbalance at the time). However, Ai-chan does cry when Ai-chan writes sad scenes. Ai-chan is just a big softie carefox.
While Ai-chan doesn't set out to make anything funny, people have told Ai-chan that Ai-chan IS funny. C'est bizarre, non? Maybe because Ai-chan writes over-the-top scenes with over-the-top reactions similar to Japanese manzai. That's like stand-up comedy in the west. Stuff like that is pretty much universal among the human and alien race.