In Star Wars: The Force Awakens, when

Han Solo died,

Leia became aware of it instantly.

Yes, Leia is force sensitive, but when Alderaan was destroyed, Obi-Wan heard billions of voices crying and going out of existence which is generic. When

Han Solo died,

Lots of people were also dying there. How could Leia intercept particular death signal provided that

Han wasn't force sensitive?

Talking about love, when Padme died, Vader never sensed it. Then, how come Liea sense this?