Please respond: a short fiction piece

[writername]

I think the twist is very clever. I'm feeling perplexed as to how to critique such ultrashort fiction, but the fact that this blurb extracted a smirk from me is certainly a good thing.

One line that has been bothering me:

"As he did this, Emily suddenly garbled out “dada” loud enough for the entire room to hear."

After this line, we learn Jackson is deaf and hence make the conclusion that despite Emily being so loud the "entire room" could hear, in fact Jackson did not hear. I'm not sure how I feel about this. Despite third party narration, we assume in a generality as such that everyone in the room heard the cry.

Being that it is from Jackson's POV, is Emily really silently playing with her toy, is Jackson really silently nodding... or is this all just allusion to the fact that he is deaf?