Max's father said he sent Max gifts and letters while he was in prison, but Grim and Gram never gave them to Max. Do you believe Max's father really sent letters and gifts?

Yes, Max's father had wrote letters and sent gifts to Max while he was in prison.

Explanation:

Max's father was in prison for last seven years. He had been serving his punishment due to a crime of murder. Max was really attached to his father and could not live without him so Max's father started to write letters to Max and often sent him gifts but Max did not received any gift because Grim and Gram never gave him the letters and gifts.

umm i have no idea what that is good luck : )