A very balanced analysis and I completely agree.
No one is at fault everyone is trying to accept the new changes around them.
Sona is going overboard with this impress ishwari thing but that is because she doesn't know ishwari's real intention and she is genuinely trying but in that process she is ignoring dev. She needs to be wife first and then anything else hope she will handle situation smartly after sensing ishwari's real self.
Ishwari is always like this nothing new.she always dictate dev what to do and what not to and whenever dev tries to question she makes him feel guilty by heavy emotional atyachar.
Dev is happy because for him everything is sorted maa is happy and sona is his wife.he can't see the tension around because he is thinking according to face value only and according to face value everything is perfect.he is concerned for sona because he knows her and he can sense that change.this is not that sona whom he fell in love with and so his every question was valid today.i hope these little arguments and situations will teach him to create balance.
Bijoy is concerned for sona I get it but before knowing the complete scenario lashing out on your SIL is not done. There should be some courtesy when someone is at your place forget about your SIL. He needs to tone down a bit.