Just Because - Just a thought

I seen a young lady the other day and I thought her behavior was odd.
Then I felt guilty for having a negative thought. 
What if she was truly in need of something, or perhaps she had somethings on her mind or who really knows.
I had no idea what she was going through as a human being and it was not for me to figure out.
So, I sprung into action. I purchased a gift card with a note "just because".
We should just care about each other "just because".