In spite of the incredibly strong urge she had to pull the 11-year-old in front of her into a bone-crushing-molly-weasley-worthy hug and assure him that he was every bit as brilliant as she was saying and that everything would be okay, she somehow--by some sort of divine intervention, she was sure--managed to restrain herself. Instead, she pushed her smile a little and took a deep breath, setting her mug down and tried to come up with a game plan.
Luckily, one came through the front door.
"Oh! That's Remus." She said quickly to Harry. "We're in here!" She called out over her shoulder. "He's much better at explaining than I am and he's a mate of your parents. He's come to help."