I'm surprised no one commented on how racist this family is
The Stone family firmly perpetuate the incredibly wrong idea that the opposite of racism is colorblindness. Even if Meredith had been pointing at Thad's boyfriend that doesn't make her racist. It means she has eyes. It's just awfully ironic that they harp on her for pointing out that people have differences (deaf, gay, black) but all they do is complain about how different she is from them.
I'm also super disappointed Thad's boyfriend didn't seem to have a line in this movie. I feel like any sensible black man would have been like "chill out white people! I am black! Thank God someone noticed!" He's not the deaf one, so he definitely heard her.
And to top it off they start laughing and acting like Rachel calling a guest racist was CUTE after that guest left the room distressed. The Stone Family = the most backwards, uncompromising, bigoted family ever.