Ram's mother is giving Revathi good advice

"If your brother does not do a great job, I will have no choice but to stop your wedding!"

She's actually telling Revathi to get away from her and Ram and that Revathi can stop her family from going through all this trouble for nothing. And best of all, she knows that Ram does not love Revathi.

So I'm surprised that Revathi is still having the marriage despite her husband and mother-in-law actually telling her that she's making a mistake.