Is sending only a selfie for verification purposes overstepping?  Thoughts.

or a selfie of the provider?

Do you mind sharing a selfie 🤳 with a smile?  
I use real life id for verification purposes. I love to see whom I am sharing my time with. I do love a good selfie with a smile. 😃

Are you married?
Do you have a social media presence that she could exploit?
Do you have a job that would be in jeopardy if you are discovered to solicit sex workers?

If you are going to be sending pictures of yourself, use one that is online somewhere.  This way if they attempt to use it as extortion evidence, you can say they just copied it from online.  

Yep.

If you don't feel comfortable sending one then find another provider. Why must we keep going over this.....

Good answer.  Also agree with John that is low level exposure.  Also, liked the opposite answer with the photoshopping your selfie.  Hope they don't get too disappointed looking out the peephole.  HA!

The only downside of using a pic that is already on social media is that she could potentially learn your real name, etc... using reverse image search. I would. I have.

On this, we are in 100% agreement, lol!  Lots of options out there.

I have been asked to send selfie with license and proof of insurance.

Never heard of that one before.

I guess she wants to make sure she can file a claim if she gets rear-ended.

Now that's funny!

... or banged up.

Very fuckin' weird..  

You should have said you just saved 15% by switching to Geico and you'd be glad to show her how.

Maybe she was a cop, asking for “license and proof of insurance.”