What did Sal's mother leave for her when she left?

I don't get this question??

In any case, Sal's mother left the very next day without saying goodbye to anyone. However, she did leave Sal a letter, in which she explained that if she'd said goodbye it would have been too painful and would have sounded too permanent.

Hope it helps  

Have a great Day : P

they used personification to make the truck seem mean and violent.

hope this !

feel very well should be good