Which outcome will you choose from this story?

Sorry this question is a little weird and long one, inspired by some movie i watched on TV last night. I don’t know it’s name… coz i started watching in the middle.

A little story of a brother (25) and his little sister (16), both really care for each other and are their only family. But the sister is sick with terminal illness and requires an expensive treatment. Financial condition of the brother is not that great to afford that treatment. And the time is running out…

At that time brother meets the woman of his life and he falls in love with her. She is from rich family. Seeing how hard he is been working and his determination to save his sister, she also falls for him. She decides to help him with money, he rejects the money at first, but in the end takes it anyway due to urging from the woman and for the sake of his sister. The sister gets her treatment and is now fully cured, they all three live in peace and happiness now.

Months later brother proposes to the woman and she accepts it, but a week before the wedding, something happens…. they were all having lunch one day (brother, sister and the woman) and suddenly some thugs barges into their house and takes woman and sister hostage. They point gun at both (woman and sister) and suddenly the brother is left with the choice to choose which one he wants to save…. The thugs have a long grudge against the brother for some unknown reason and they are the type to act first and talk later…

1). In one scenario he is given two choices…
He can either choose the sister or the woman

2). And in the other one
He is given a choice to kill himself and save both (woman and sister)

Please answer for both scenarios respectively..
It’s a weird one i know.. I really appreciate all the answers…