What does redemption mean?

Someone has done you wrong. Maybe they’ve spent time in jail. They’ve paid their debt to society, but does that redeem them? Or do they have to make restitution in some way? Or more than restitution?

If someone has redeemed themselves, do you trust them? Or are you always and forever wary of them; no longer willing to trust them in some position of any importance whatsoever? Once a whatever always a whatever, no matter what they do?

Does redemption mean complete acceptance as if nothing had happened? Or is it always conditional?