I'm still waiting for the context from Tesla ie. how to even be in that situation (several women being OK with sharing a sexual partner and being coerced into a sex act with a relative) 
Just a hint or two, nothing incriminating 
Ok both girls were parlour girls I had seen before on a few occasions, there was no coercion, every body was consenting
I had seen the elder girl (Aunt) many times at the parlour, she was a reg, her nieces both worked at the parlour and I had booked both of them individually them on occasion.
My reg, the Aunt, also saw me privately away from the parlour for longer bookings.
I had arranged a 2 girl private booking with my reg at a hotel and she was bringing another girl from the parlour, unrelated.
when she arrived she said the other girl cant make it so I have brought X with me, her niece
Both were comfortable in the situation, and eventually the niece went down on her Aunt, she was unsure at first but her Aunt said it would not be a problem for her
Aunt was 27 or 28 at the time and the niece was 21/22
we all had a lot of fun