my master wrote a story that loosely follows this storyline. There are some differences, the businesswomen agreed to be a sex slave to another competitor so that he would help her out of financial problems & the dress attire was different. But overall, she was starting to get used much the same way your character would be.

but after 3 chapters he got bored & moved onto other projects. I'll try to go through all his files sometime in the near future (I'm a bit of a procrastinator) & find it.