It's a bit sad to watch her waste her efforts on Kujou who sees nobody but Victorica in the end. Avril might have called herself dense, but she's not so dense she wouldn't notice it. But I guess it's not so easy to let go of your love.
Well, no matter how unlucky Victorica has been in life otherwise, at least she can be thankful for her cuteness that keeps Kujou coming back to her, despite her obnoxious manners.