by grumpyg
Now that he has fucked his daughter a threesome with both wife and daughter would be good. Write about Diana and her daddy, but then return for Chapter 3 of this series.
Do the other story, but explore this more. The threesome would be the natural progression, plus it's just plain hot.
Getting the two girls together will be fun. Having mother and daughter involved would be another avenue and finding out the relationship Diana has with her Dad is good too. Great Story.