A wonderful part of the Good News! is that change is possible, coming back to the gospel is possible, being gathered in the arms of the Good Shepherd and carried back to the fold is possible. But more than possible, it is wonderful.
The second parable is about a woman who lost a coin. Now a coin has no volition and so in this case it is the caretaker’s fault that the coin is lost. So the woman, knowing she is at fault, works hard to reclaim the lost coin.