Very Little
Even after Lydia had done her best to explain everything to her, Apryl didn't feel as though she understood anything more than she had before. Except that Brian was up to no good and it involved her family.
She also trusted her aunt less after finding out that she still chose to stay with her mate knowing that he had done something to their pups. What kind of reasonable and sane wolf would be able to do that? Apryl certainly knew that she couldn't have. She also knew that her mother wouldn't have stuck with her father if he had ever done anything like that.
Thinking about all of that had caused her annoyance to rise to another level. She hadn't been able to eat either which didn't help matters much. Brian had derailed her with his confrontation when she had gone inside. She doubted that her aunt would bring anything out to her and the rest of her family had already finished eating all of their food.