I think you're approaching it right by now having her do something for you and playing on your terms. Also you should be sure to stop it for too much pressure or if she gets too wound up. She should stop quickly when you ask - I usually end with a command to re-direct the energy (basic like sit or whatever.) Phillip end with kisses.
You have to be careful when they're young that they get the rules. I didn't wrestle with Frankie until she was a little bit older but I think I could have sooner - she's sharp.
Frankie plays differently with me and P. She knows that I tolerate very little pressure when wrestling and dad lets her get away with more. When she goes overboard with me, we stop immediately. It rarely happens.
You can play with Henneh and make her sound evil too. I have a video on my phone that I should upload so you can hear her. We joke that we could sell her voice for millions to Hollywood when they need a devil dog noise. But she is definitely playing....