George's presence was indeed providing comfort for Angelina. She'd always been a social creature, and Angelina always did best in social situations. Ang had never been good at facing her fears, and only did so when pushed. Today, like McGonagall had done so many times before, George would be the one to push her. It was hard for Ang to show weakness, pain, and hurt. She felt guilty, but Angelina could no longer control her grief. Hogwarts was supposed to be the safest place in the world, and yet two people Angelina cared deeply for had been viciously murdered here. How could anyone look at it the same?
Leaning her head onto George's shoulder, Angelina continued to softly cry. She was grateful she wasn't sobbing, and was grieving nearly silently. It was a bit embarrassing to be caught sobbing! Angelina thought George might understand, given the circumstances, but that didn't mean she was comfortable doing so.
Looking up at George, Ang gave a forced smile. "You can't stay forever," Angelina said, half-laughing, half-sniffling. It didn't cross her mind for a second that George wasn't crying. At the moment Angelina was a bit self-involved. Had she been looking in from the outside, she'd probably wonder why. While George had a different relationship with McGongall, they were still friendly to each other. Certainly this had upset him as well, but Angelina just assumed the typical 'men don't cry'.