Problem: If "The table won't fit through the doorway because it is too narrow.", is "The table is too narrow." correct?

Answer: no


Problem: If "The woman held the girl against her chest.", is "The woman held the girl against the girl's chest." correct?

Answer: no


Problem: If "Sid explained his theory to Mark but he couldn't understand him.", is "Mark couldn't understand him." correct?

Answer:
yes