Has anyone had any issues meeting with this provider?   She had great TER reviews and a website that made her seem legit, and so I reluctantly sent a 50% deposit to secure a future date.  But now her website is down and she is repeatedly emailing me offering additional services but only for another up front payment, both of which seem odd and out of the norm for legit providers.  

This doesn’t sound legit to me at all. It sounds like someone is using her name and reviews to scam deposits and now milking it for all it’s worth. I wouldn’t send another dime, and get mentally prepared that money may be gone. Not sure if there is a way to easily get the money back. Sorry bro. Proceed with caution.

Reviews seem to AI generated, with lots of tell tale dashes.  
Also reviewers are recent, no long term reviewers with lots of other reviews. Reviews seem consistent so that’s a flag too.

This is why more and more are refusing to send deposits.

When I go to her website, Google Chrome shows a pop-up that it's been translated from Chinese to English.

Right.  Sending deposits to a stranger is a bad practice.  I just move on to those who don’t require them.