stray cat jaw operation need help

On Wednesday 16/10/2019 I found this cat on my way back home. she being hit by motorcycle and the guy put him on the grass nearby. I thought he will take the cat to vet.

On next day when im on my way to work I saw the cat still alive and she hiding below the recycle box. Its heavy raining on evening and i didn't go check the cat since im using taxi back home. But I felt worried about the cat.

Following day I saw the cat still alive, without food for 3 days. I felt so terrible because i didnt help her in the first place. So that night i brought her to vet.

The doctor said the cat need surgery for her jaw to be able to survive and it is expensive operation. For a stray cat, i think is better to put her on sleep. But i felt uneasy with this decision, so i let the cat warded for a day and do it on tomorrow.

The next day, I went with my brother to the vet and the doctor told that the cat is grooming and she look ok except just the broken jaw. I felt that I should help this cat