We (adults) tend to complicate things. Children, not. That is straight forward thinking, 5 year old or not. Love it!
A similar situation: I was digging in the garden when my very young daughter @ the time, came out to advise me that lunch was ready. I said that I wanted to finish the job. With out thinking, my daughter
said, just leave the shovel there and come in. That way you'll know where you left off.