Breaking engagement

Hello sir ,. I am sapna sharma , actually we want to Bihar to see a girl for my bhaiya and within 1 hrs we finalised her without knowing her family background and next day we arranged their engagement . After that we came Mumbai and we started talking to her and we were knowing that she has done her Bachelor's in art in home science but after engagement when we asked her about her education to explain what exactly she studied,she every time use to change the topic but one fine day I made her say everything and I came to know that she was very poor in studies and she haven't given her 12th by her herself ( this she didn't said but in Bihar another candidate gives exam for you and she got 44% in 10th and 60%in 12th so by this I came to know she haven't given her exam by herself and surprisingly she doesn't know when she had appeared for 12th exam ) we asked her send her graduation certificate pics ,she questioned us that why do you want and do you have doubt about my studies and all and she said talk to her younger brother to send pics and her brother sent and we came to know looking at those certificate that those might be fake because it is very easy for biharian to get fake certificate .I asked her tell me something about her studies she said she haven't studied anything right on my face and she said studying or not studying both are equal because " padh lekh kar kya ukhadenge " this were her words. she said she haven't went to college for studying that means she haven't give exams and her younger sister is also studying the same and from past 6 months I haven't heard that her exams are starting or what she is studying . I asked to her sis what she is studying she said why do you want to know.This girl was ill when we went to see her and I asked her do you always fell sick she said no just because of sun she is I'll and on phone call she said she has done vomiting more than 10 times in a day and in the span of 4 months she was ill most of the time, I said this to my bhaiya and he asked her older brother for medical checkup they said this is not right and they will not do and this is insult for them and they said if you have asked before engagement it was good but now they will not do.And on this topic her cousin sister contacted my mama (mother's brother ) and said let me see how they don't marry my sister and very rudely she talked and in the afternoon she contacted my bhaiya and said she you can't do this ,this is wrong and from past 3 months you are talking to her don't you have trust on her and said us what you people should give her to wear and said she occasionally wears saari and is always in salwar suit and whatever you want her to wear she will wear and she said to fix marriage date asap.Her older brother said how can you tell her certificates are fake and my bhaiya is 12th pass because my died when he was very young and he had to take care of us to this he