Beating that will be my new years resolution.
Did you have to leave the sending computer on the whole time?
Discussion
Once the transaction has been broadcast to the mempool you are free to do whatever.
And the receiving wallet finds out from the mempool? I.e. if it knows then I can be sure the transaction is in the mempool?
From the mempool the transaction will eventually* be put inside a new block, transfering the funds to the receiver, which is basically the start of final settlement. No inputs from sender/receiver needed once the transaction is in the mempool.