Her mind

The answer is either daughter or son-in-law, depending on whether the speaker is female or male.

They asked when she was murdered. He wouldn't have known exactly when she was murdered unless he was there. Since it was hours after the wedding, the guests must have left, meaning that only the husband and the wife were present.

One. Only one person drives a car.

Tomorrow

The man was a photographer. He shot a picture of his wife with a camera.

Without knowing what the symbols meant. they knew each symbol stood for a letter. There were four symbols written on the note, and only one suspect with four letters in their name. Therefore, the police arrested Ella. For further proof, the symbol ? was repeated twice in the same place where the letter "l" was repeated twice in Ella's name.
(I'm sorry if this was bad, I made this up myself and I've never really made up my own riddles :) )

Her mouth????????????

alex is the name of lily's dad

All animals, buildings don't jump.

A carrot

Red duck.