Curate, connect, and discover
So, cool concept I thought of.
What if, in Mahiru's last moments, she asked Yuno to hug her so she can feel loved for one last time?
And Yuno does it because one should honour the last wishes of a dying person.
And even though Mahiru is dying she is still warm because of the inherent warmth present in her.
And it makes Yuno feel warmer like being with Mahiru always does.
And when she dies Yuno continues to hold on to her to take up as much of the remaining warmth as possible.
And then Mahiru's body goes cold.
And Yuno loses another thing that kept her warm, leaving her cold once again.