Right in front of me there was a guy who brought what must've been his grandma who seemed to be at least 70 years old. I got a quick glance of her in one of my clips but I'm having issues trying to upload it. And she was standing up for most of the show!
Not sure, but it's possible that you saw Patricia McLaughlin, known to most here as "DT granny". She's definitely at least in her 70s and is a diehard DT, Satch and Queen fan (she told me she was looking for another band after Freddie died, and she found DT), and she s from England, but will travel to the US to visit friends and catch additional DT and/or Satch shows in the process.