Well... in all truth-- she was super happy to see him. He made a great human shield from cameras and photogs and reporters asking her really dumb questions. While Michael distracted them, Dinah gave him an encouraging pat on the back and ducked into the coffee shop -- they couldn't legally follow her inside, right?-- and ordered two large coffees and a chocolate cranberry brownie which hopefully Mike would like because it was his reward for defending her honor to the crowd.
Speaking of the crowd though-- there was a ton of excited camera snapping when the blonde man was thrust at them, though a collective sigh of disappointment when their actual target disappeared into the building... but she'd given them enough bait to keep them fairly satisfied with asking questions of him instead.