Fred/Helena and whoever else is good people!
Welcome to the family?! If there had been any liquid in her mouth at that time, she would have spit it out all over Ginny. Thankfully, there wasn't, but she did give the redhead a strange look. "Um. Yes, thank you, Ginevra?" She tested out the new name, questioning her as she went. She didn't understand the joke, but it made her just a bit more uncomfortable then she had been mere minutes ago.
And then Fred was gone, and she was left alone with this virtual stranger. She smiled, but remained quiet for a minute. Fred did want her to meet his family, he had said. "This is a nice party. You are.. Mr. Harry's wife, no?"