Your friend has lost his/her purse with your important documents

Your friend has lost his/her purse with your important documents in it. You would

1. feel angry but do not react as anyone can make mistakes
2. feel angry and ask him/her to replace/duplicate the documents.
3. understand the situation and tell him/her that it's ok and not to worry about it
4. blame him/her for being careless and stop talking to him/her

In the given situation, you must understand your friend's situation as anyone can make mistakes. So, you need not react to the situation.