Fred had been laying on his bed, writing out steps to a potion him and George could try when he heard someone start yelling. It was yelling he was very familiar with, and it made him jump out of bed and practically run to find her. He knew she wouldn't be yelling like that if she wasn't really hurt.
He ran down the steps, coming up behind her. "Ang? What happened?" It was no use asking if she was alright. That would likely just get him hit for asking a stupid question. He reached a hand to lightly tug on her arm, pulling her into a tight hug, refusing to let her go.