Read Sandi's reply to you again. This is all horsesh!t that your W is feeding you. Do not react.
Your wife is projecting her issues on to you and making it all your fault.
She wanted to seperate and for you to chase her? That's comical. Mine did the exact same thing. I never once chased her and now she is regretting her decision to leave me. She calls my mom crying all the time.
Don't take the bait because that's exactly what it is... bait.