Re: "If she'd just talk to her, she would start talking!" gmil and mil rant
Apparently I didn't talk AT ALL until I got tubes in my ears when I was 2 1/2. And my mom swears (though I can't be sure I believe her--it sounds so dramatic) that I started speaking in sentances on the way home from the hospital.
And my little brother didn't really talk until he was almost 4. He's in medical school now.
It might be hearing, it might be developmental, it might be nothing. In any case, your in-laws have no right to be unsupportive and naive.