Just use another ampersand.
The former TeenOne decided to work today, so someone else wouldn’t have to, but has just returned to the fold.
We will now open presents. I wonder what I got for my wife?
OK. But if you would, please, show me where to put the ampersand? I’m at the time of day when my brain says its done enough and refuses to try and process anything more complicated than a, b, c...