There are times when "divine intervention" can and will take place. You'll find the letter when you aren't actually looking for it. What were you doing when you contacted her last night and right after you hung up?
I'm glad you both had a good conversation about the financial situation and hopefully you can help her out a bit. The man upstairs has a way of making us stop and take notice at times.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.