At the temperatures you have indicated bacterial growth is hugely
reduced.

Water will be solid, anything added to water will tend to reduce its
freezing temperature.

A fruit mixture will tend to break along the surfaces and will appear
bendy.

Be sure when you store things in the freezer to leave an air space
around the item so that the cold air can circulate. Particularly
important when adding a new item to the freezer.

You want to get from room temp to frozen in about 2 hours.

Your fruit pies should be fine.

Check for odor after thawing.