Assuming I'm a provider's first company of the day, is requesting her to shower/wash the night before (instead of the morning of) a fair request?  I'd like her to be (reasonably) clean but light natural body scents are also a turn on...

edgy indeed..no wonder these ladies are dumbstruck with some of the requests they get

....hit the gym in the morning, head out for a run, etc.  If you are asking a lady to give up her normal morning routine, you should tip her extremely well.  

Sorry Kelly, but that's on the girl.  

...her routine isn't a concern. I don't ask her to change her routine. I ask if she can accommodate my request.

Got to go away now. I need to recharge my humor batteries and get some "seriousness" suppressed. It took too long to figure out why a well illuminated keyboard was a bad thing. Hope the keys aren't too sticky. Finally the little chuckle I needed .

I would not do that unless I had seen her before, and had built a good rapport with her.  Most people like to shower and freshen up in the morning, and she might be offended if asked not to do that.  They always want us to be clean and fresh when we go to see them.