How I can stop my daughter from marrying a boy against my wishes?

I am a middle class Indian citizen, had two daughters and one son. My elder daughter completed masters of Science, and married with a lower cast boy against the wishes of our family by cutting off all the relation with us. This gave all of us immense pain and mental agony. My younger daughter is studying in 12th and I am compelled to stop her studies beyond 12th owing to the family pressure because of the act committed by her elder sister. As she is a bright student, this will be an injustice to her. Sir my query is that can I make a legal agreement/ deed with my younger daughter (after attaining the 18 years age) so that she may not be able to repeat her elder sister’s act in future and continue to study and marry thereafter with the wishes of our family i.e. to a Brahmin boy at least. This deed/ agreement should be legally binding on her to marry a boy as per our direction plus her choice (means her choices are restricted to our social parameters i.e. the groom should be a Brahmin boy) or remain unmarried till the time we both parties did not get a perfect match. If she breaks this agreement/deed and marries against our wishes, that marriage should be null and void in the eyes of law and her act should be punishable under IPC. Sir, your valuable advice are sought to weigh the incident in eyes of law and come up with a legitimate solution to minimize such acts. It is very important to state that children (son or daughter) build their education and career by the hard earned money of their parents, their time and energy for at least 25 years and later they must not deceive them as described above.