I need to get a life, can't stay away from the forum for long. Mom is giving me *angry looks*. I actually thought of writing the character analysis of Buaji but I was apprehensive about it.
Later I got a request from HeadOverHeels to write an analysis on Buaji, so I am reposting whatever I wrote in another post but I added some more points here.
We're all very much mad at Buaji for her treatment of Khushi. What she did to Khushi is completely wrong and I am not defending her at all. No matter what the reason is, forcing or emotionally blackmailing anyone for marriage is an unacceptable behavior.
Buaji isn't really Khushi's Buaji as in she's not her blood relative. It was clear from the beginning that Buaji never forgets that fact. When Payal's marriage was called off in Lucknow, Buaji held Khushi responsible for it. She even said that if Payal was her own sister and not her cousin, she wouldn't have done it. She does love Khushi but she clearly loves Payal more. She was always very strict towards the girls but more towards Khushi.
Later when the girls moved to Delhi, Buaji softened towards Khushi and they bonded pretty well. When Shyam came to live with them she noticed from the beginning that Shyam has feelings for Khushi and not Payal.
Buaji is widowed and does not have her own children. Before the sisters came to Delhi, she lived on her own and was lonely. She has financial issues as well. She has some legal problems regarding her late husband's pension money. Shyam promised to help her with it and I don't remember him asking for money. Shyam lives with them as a paying guest. Moreover Shyam offered to help them financially quite a few times.
The sisters and particularly Shyam has brought out her dormant maternal side. She is deeply attached to them now. Shyam has always pretended to respect Buaji like a mother and this has impacted her deeply.
Buaji made a huge fuss when Shyam pretended to move out of her house after the neighbors first taunted them. Buaji acted all possessive and didn't want to let him go. But if you all remember, Buaji was also possessive when the girls wanted to go back to Delhi. She didn't want to let them go either even though her own brother was ill and had financial troubles.
Buaji has become obsessed about this marriage because she doesn't see the possibility of Payal and Shyam's marriage because Shyam isn't attracted to Payal at all. He is attracted to Khushi and Buaji knows it. If Khushi turns him down then Shyam won't stay there forever. If Shyam moves out she has lesser chances of sorting out the pension issue as she can't afford another lawyer.
If you notice carefully, Buaji is acting as if her opinion matters the most regarding the marriage. Before Sashiji suffered the heart attack, they had several conversations where Shashiji expressed his displeasure for Shyam. Buaji simply ignored his opinion and she now falsely believes that he wanted this marriage. She doesn't seem to care about Garima and Payal's opinion as if their opinion doesn't matter at all.
So Buaji is afraid of losing it all - the girls, the pension money and the man she now considers a son.
This just my attempt to analyze her behavior. I am not a psychologist or anything so I could be wrong here. Feel free to comment.