It is possible that the woman at this wedding is the Counsel he obtained. She worked for him as a WH counsel in the past.
President Obama Officiated at a Wedding in DC This Past Weekend
Dana Remus and Brett Holmgren had a pretty memorable wedding.
washingtonian.com/2018/01/23/president-obama-officiated-at-a-wedding-in-dc-this-past-weekend/
Look up Dana. She might be the one Q is referring to.