does provider normally email to confirm appointment.
a potential provider email me asking to confirm my appointment.
is she real or fakfe

There is no "one way."  Different providers prefer different methods.  Up to you to roll with it if you want to  see her.

she just sent an email again as follow:

"Confirming our Rendezvous tomorrow at 7 PM , one quick question are you coming to me or me to you ?"

is this normal? just want to make sure it is not a fake sting ops

I am Email Only so that is how I correspond regarding setting up an appointment.I cannot answer your question and see if she is real or fake because she emailed you a confirmation.Did you research the potential provider in question?I am assuming she does not have reviews because if so you could confirm if she is real or fake.Her asking if you are requesting Incall or Outcall there is nothing strange about that.If it was not discussed if you are inquiring on Incall or Outcall in your initial contact how else is she suppose to know unless she asked?If you are worried if she is fake or a sting I would suggest doing more research before taking the plunge.