Aww, that was sooo sweeet!! And yeah, I also sensed Sadi's sadness as she was hugging Alekh....I think deep down she really does crave something a little more than what Alekh is able to give her, even though she does appreciate all that he's done for her...
That's exactly what I felt too as I was watching the scene.....Sadi's sadness felt almost tangible....she does love Aalekh with all her heart, but that moment clearly showed that she does crave for something more as well.....cuz she was hugging him properly, while he was busy smoothing her hair or poking at the sequins in her blouse😆
It's such a difficult situation.....he loves her so much and yet he obviously doesn't love her in the way a husband does and the way she needs as a wife.....The contrast gets highlighted even more with Ragvir able to romance properly.....That previous scene when Sadi explains the difference b/w Ragvir and Saalekh's marriage also highlighted her wistfulness and sadness.