Remember Anu's father said "We can't wait for 2 months for the next wedding mahurat" ??
After my ridiculous previous prediction, here's another guess-
May be Tani's father is suffering from some disease and he is going to die soon. So he wants to see his daughter getting married before he dies. The "tu dukaan pe nahin jayega" is because working in the shop is adversely affecting Tani's father's health.
What say? 😉