1) You already know what to do. Think of it this way, your children are going to grow up third generation American. Would you push an arranged marriage on them? The ties to India have been tourniqueted, and will wither a bit more with each generation. Quit worrying about your parents' lost cause and worry about your life.
Vid) Your life apparently isn't much more interesting if you continue to spend so much time with these people.
2) Does your business relate to the medical affairs of these people? If so, then Kelly needs to be stopped. If no... well, it would be nice if she'd shut up, but she's just going to preach elsewhere if she's fired.
3) Imagine you receive a card in the mail: "Dear Twotimer, me and Slappy Sam are giving it another go. Come to our destination wedding in Vegas and wish us luck (again)!" Something tells me you'd rather spend the time and money on a colonic. Take heed.
4) Pull down your pants and fart on the whole bowl. Then it's all yours.