They did use the lullaby. Carter Burwell wrote it. River Flows in আপনি is NOT the lullaby. The অনুরাগী liked the song so much, they used it as Bella's Lullaby, but it was never considered দ্বারা Summit to use as the lullaby. River Flows In আপনি was written দ্বারা Yiruma, a japanese composer
because their stupid ! , they didnt want to use the one that we all like they used the carter one which frankly doesnt sound like its really trying to tell her he loves her
i dunno maybe coz robert couldnt play it well enough? what was the 'real bella's lullaby' anyway? River Flows in আপনি দ্বারা Yaruma? well, i think carter wrote that one too...