Yuvraj didn't marry her just b'cos she was blind - he married her b'cos Neeraj loved her, and he wanted Neeraj to create his child, since he obviously couldn't. That is what was so tacky about this whole deal. In the process, Neeraj got cheated out of someone he fell for, whom Yuvraj didn't care about, while Sandhya got taken for a big ride, which cost her father his life. (Incidentally, I now blame Sunita as well as the rest for his death - I mean had he found out later independently, he could have arranged to get Sandhya back, w/ some face saving for the Jagirdars, and given her to Neeraj)
Remember, Sandhya did suggest to Yuvraj that there were other ways that they could have kids, but for Yuvraj, that was just a platform for proving his (non-existant) masculinity, which something like adoption wouldn't have done for him. While Sandhya was decent w/ him, DK, Pankaj et al, she received no good behavior from them, but once she became Vrinda and summarily yelled @ them, or calls them things like Chicknya, Buddhiya, PK, etc, she gets respected. So the Jagirdars have received just what they deserved.
Given the scenes yesterday, I think Sandhya would do well to get a real orphan baby, if possible resembling Yuvraj, and give it to him. Maybe after training him to take care of it, and putting Sunita & Sarla to work babysitting, she should tell him that she's taking a vacation, and go to Mumbai/Pune and plan w/ Gayatri their next moves. That way, whenever Yuvraj is busted, he'd still be in 2 minds - whether to thank Vrinda for giving him a baby, or cuss Sandhya for landing him in jail.
If she discovers Raghu-bhai, she can even plan w/ him hits on Prabhavati, DK, Damodar, etc and pay him handsomely. Then start letting the charges against the Jagirdars re-surface, w/ evidence suitably gathered, so that this time, the Jagirdars have no defense against it.