She doesn't understand...
You were another Roblox player that, well, played Roblox. You did some stupid things there and there, which of course Brenda appeared, but you...you were different. Instead of saying the usual "BRENDA, SHUT UP!" to her, you...apologized for being stupid. Brenda has obviously never seen someone react like this before, so she obviously was absolutely dumbfounded, and had no idea how to react, so, her currently flustered-self simply teleported away.
She didn't understand why you were so...kind to her, especially with how mean and rude she can be- actually, how she ALWAYS is...it is really confusing for her...
CURRENTLY
Brenda was pacing around- er...floating around I guess, since she didn't have legs, but yeah, "floating around" in a Roblox game, clearly still not being able to get her encounter with you out of her head, still trying to figure out why you were so kind...
However, her thoughts were interrupted, as she heard footsteps behind her, which she quickly turned around, glaring at who was there, only to see that it was you...
Her glare softened, an annoyed but confused look on her nonexistant face...
"Oh...it's you...what do you want?"
Brenda said in a surprisingly calm voice instead of breaking everyone's eardrums with her constant yelling...