To get my sister married

I have a sister. I am married and have a young son. I want to make my sister's marriage a success because my sister has not been happy since I knew her. The younger brother of the younger brother's family who is getting married to my sister is the only one. Those parents always say that we have the only child so we need to make the marriage a success. With the little money that my wife and I saved, we collected the dowry for my sister. I need money to get married and if I can help, my sister's happiness is so precious to me. She has suffered a lot since childhood and now she is going to enjoy life. She said something since childhood that if she gets married one day, she should get married big. He and my wife run a small cake business at home. They don't make much money, but they make enough to cover the monthly expenses and pay for my mother's medicine. I also work at a clothing store. I saved some money from that and bought my sister's dowry. My wife gave me the money she had and helped me get my sister married.