Guess there was some initial plot in RM story to make Tulsi's awara brother eye young R who lives in M's house, then M beats him up. Later Tulsi's mom proposes R's marriage to her younger son after knowing grand child G's growing attachment towards R,😳 so as to make R as G's mami and get brownie points from G.
Assumption would be this decision influences G to accept & move into Tulsi's maternal house after refusing to live with M, as R anyhow will be with her as mami in that house, thus M may be in the verge to lose control over G. 😛
But since Oct, its D's muhurat/rituals with cat fights that are yawningly stretched like chewing gum in RM.