Abby nodded. It was no secret to her that relations between Sirius and yourself were tense...and she knew why. Regulus told her. If there was one thing that Abby was thankful for in her relationship with Regulus it was honesty. If she asked a question, then he told her the cold truth. You hadn’t always liked it (in fact, sometimes you had horrible arguments with Regulus over it) but Regulus was always honest.