Counseling for teen anxiety?

Looking for recommendations and experience with teen counseling for anxiety. Specifically a female 9th grader.  Been noticing it increasing over the past couple of years, and I think we're now at a point to seek help. 

I finally managed to talk my high school son into some help last year.  We actually ended up with better help online.  It's $90 for an hour, every week, which is far less expensive than most options if it works for you, and he's able to keep up the meetings now that he is in college.  He says it helps, but of course I respect the idea that what he says there stays there.  I only know what he chooses to share.

I was thinking that it might be easier to have virtual sessions, partly just to get over the hump of starting counseling. Easier and less formal than going in person and being in a strange/formal setting.  Although there are definitely benefits to being in person. 

Kids prefer online.