When Angelina walked into the King's Arms, she took a glance around the room looking for Katie, though she knew that Katie was unlikely to not be disguised. Scanning the joint, Angelina looked at every person who was currently sitting alone as she logically began to deduce which might be Katie. Ultimately, she decided that Katie was not going to be showing up looking like a creepy old man, and thus, she took a seat across from whom she hoped was Katie, and said "Oi, is this seat taken?"
So it was either Katie or Angelina officially looked like a lesbian trying to find a girlfriend. There were worse things in the world.