Ending - Disgrace would be a better title. - A Lot of SPOILERS
The movie is terrible, but the end is much worse than it looks.
As Isabel killed the policeman (aggravating circunstances) and her father, I think she would get life imprisonment. In the best case scenario she will be stuck in a penal institution for mental patients.
The defense attorney will claim rape and so the officer's family will lose the pension. Consequently, Keanu will lose his only friend (Janine) and the confidence of his boss.
I do not know if in New York abortion is permitted in such cases. If not, poor child: rapist grandfather, rapist father and killer mother. No one would be with the child, neither Janine, nor Isabel's poor mother, nor Galban (Keanu), which no longer takes care of his child.
What a week for the Latino family: lost a son in Afghenistão raid, another killed by a drug dealer, the lovelly dog hit by a car, and the daughter-in-law became pregnant by a miracle.
If Isabel had seen Gapar Noé's Irreversible (2002) she would never have entered
in the subway that time of night.