"Forgive us our trespasses as we forgive those who trespass against us".
That being said it doesn't remove the penalty for the trespass. One can be forgiven and still have to pay the price for their sins. I'm certain God forgave Moses for what he did at the rock, but Moses still paid the price for what he did. If a family member stole money from their parents, yes, forgiveness is possible, but that forgiveness doesn't remove the penalty that needs to be paid in all cases.