1.

Alone. That was the best word to describe Sasha's current situation. Her family's gone, vanished from earth. All down to one huge event that impacted the entire planet. The alien invasion.
After the first few months of tending to herself, fighting for survival, freedom, the will the live slowly and agonisingly draining away.
The 2nd Massachusetts were the best thing that happened to her, during the invasion.
Sasha found Ben's situation interesting, strange and peculiar. She was drawn to him, she wanted to get to know him, she wanted him.
Love, hatred, friendship and comradeship is felt throughout her lifetime with the 2nd mass.