Mami is very talkative. She keeps on talking most of the time when she is on screen. She takes pride in being from Mumbai. She thinks she is very forward. She is also proud of being rich.
Now given all of this, don't think she will be after money. Agree her show of affection towards Sameer seems over sweet and fake. I have had such realtive who will be over sweet for no reason. most often than not people who talk a lot are very transparent. Whatever is in their mind is on their tongue. It is very difficult for them to plan and plot. Kyunki itna bolte hai ki bet main koi Baat pach hi nahi sakti 😆
But she could turn evil if she thinks she is being taken advantage of. She would do anything to protect interest of her family and herself.
However there is no comparison with Dadi. Mami is still closer to reality but Dadi was an Alien from kekta land.