Choti Anu and Anupama- confusion

Did I miss something?

When Anuj and CA came back with Maya at the start of the Sample wedding events (before the show revealed the ridiculous reason Anuj never came back)

And Anupama was so excited to meet CA—choti Anu was very very quiet and didn’t say anything at all. She just stared at Anupama while Anupama was claiming to love and miss her and kiss her etc. We saw a Bandaid on her hand and she looked unhappy.

At the end of the whole conversation Anupama kept saying what’s wrong what’s wrong- didn’t you miss me etc… Chhoti Anu was just very quiet and said “I’m fine” and then they showed her calling Maaya “Maa” and she never really called Anupama “ mummy”

I’m definitely not confused as to why Anupama would deserve this behavior- but I thought the writers would also explain Choti Anu’s “cold behavior” toward Anupama in that scene.

Regardless of the fact that we all know Anupama never loved CA, but the fact is CA absolutely loved and adored Maa, so why was she being so cold toward her? Is it because she is also trying to keep Maaya happy?

Once they gave the reason that Maaya had a mental breakdown, and Anuj had to stay behind… Why did they not explain CA’s quiet behavior with Maa?

Did I miss something or are the writers not addressing this? At that point in the show I was very curious as to why Anuj stayed back, and I was also very curious as to why CA changed her behavior..

But now they have completely taken this track further, and they never addressed it.

anyone have any ideas or thoughts? What did I miss?

They have very conviniently forgotten about choti.