Yes you do, tbone. You have reserves of stamina that you don't even know about.
Man! It's tough. I know.
But you're right. She's testing you. I suspect that she isn't doing it conciously, but she wants unconditional love. So, she's pushing the envelope.
When we first fall in love, we fall all over ourselves to do things for the other. Sometimes one of us figures that this is a bad thing. Your W equates this to "changing herself for you". She figures that by doing this, she's being false to herself.
The only way to fight this is to give the appearance that this is OK. You're accepting her "true" self.
But, eventually, she'll tire of this. Y'know why? Because despite her self perception, that's not who she really is.
Resist the temptation to push back, tbone.
If you fight fire with fire, you're not being your true self either. You'll only be doing the same thing as her, and you'll fall into the same trap that she has. You'll regret it.
