Danny,
I am fan of your stories. Did you ever post part 2 of Marry Anetta ?
I am eagerly waiting for it. Think about how you can involve both the uncle and aunty with Mary.
Imagine aunty giving a hairjob to uncle and Mary walks in, and then aunty teaches mary to give a hairjob, and the same time she goes down on Mary to lick her pussy and give her an orgasm.