Does the spirit become honest?

Hello all,

If a person in this physical life was dishonest and deceitful - does their spirit become honest once they have passed?

I have an appointment booked with a medium to communicate with someone who used to be very dear to me. I'm struggling with grief now and want to have a communication to help me move on.

Do you think the spirit of the person will communicate truthfully or will the have similar dishonest patterns like they did in their human life?

Just wondering. Will still do the medium appointment but just hoping to hear what others think.

Thank you!