First question: is it a good idea or not to receive our favorite at home, keeping two meters between us?
We could ask her to undress gradually, like streaptease, and after we talk naked.
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If she's infected, it's pretty much guaranteed she'll spread the virus at your place, there's no way to stop it. You and her are confined in a closed space. You can't make sure her every movement is safe or control all the places she touches in your room. You don't know all the places she'll touch in your bathroom. With so many restrictions, is it even gonna be fun? Imagine if she coughs by accident, your place is done.
I don't wanna sound too harsh, but pleasuring oneself by looking at a girl 2 meters apart with her mask on, eh... kinda lame for me, not to mention dangerous too.