Say you offer to help a cousin or niece with education expenses of higher studies in India, or abroad if she wants to study abroad like Australia, UK, France. You help pay a good portion of Bachelor's degree expenses, and the person starts to work, with plans to study more. You encourage the higher study plans. Then, suddenly they get a good match, and decide to get her married as such good matches come rarely. You want to give a regular amount wedding-gift like others are giving, but they expect that you will give a chunk of cash towards wedding expenses.. In effect, they expect you will help for the wedding as if it is higher education. Is it petty to say you will give more for higher studies and/but will not give as much for wedding expenses? . .