Rosie's Godparents

Sherlock and Molly both agree to watch Rosie overnight for John, but will they be able to handle the other's company for so long?
Molly has a moment of frustration, Sherlock has moments of emotional clarity, and Rosie is the cuteness that binds them together. Will having a part of her meddling mother Mary within her somehow bring her two crazy godparents together at last?

Was going to be a Sherlolly one-shot, but if well received and commented on, I may write another Chapter or two <3