I had two ideas last night while fantasizing about your wonderful games.
1) Frank is back repairing the bathroom light when Wendy comes in for a shower. Things progress to Wendy having another go at Frank in her ass. After he cums in her, they dress and he leaves. Nanny then enters the bathroom, also ready to take a shower. Wendy suggests they shower together to wash each others' backs. Nanny resists at first but then says ok. In the shower, Nanny is washing Wendy's back and begins to rub her ass, exciting both of them. Wendy pulls Nanny's hand around to her breast. Nanny pulls back at first then leaves it there and brings the other around to feel both breasts. Then Nanny's hand slides down and begins to play with Wendy's pussy. Wendy leans back and they kiss. Scene changes to Nanny on her knees with Wendy pushes against the wall in the shower. Nanny is feeling Wendy's breasts and then her pussy. Nanny moves in to lick Wendy's sweet pussy, while playing with herself. Wendy cums and thanks Nanny. Then Wendy says she wants to return the act to Nanny. The scene shifts to Wendy going down on Nanny. Wendy reaches up and feels Nanny's breasts while she is licking Nanny's pussy. Nanny reaches down and helps push Wendy's head further into her hot waiting pussy. As Nanny cums for Wendy, we notice that the window is slightly open and Frank is watching the entire escapade.