Minerva appeared at Atlas' flat shortly after receiving his owl, anxious to see him and a bottle of firewhiskey she nicked from the Leaky in her hand. Walking down Knockturn Alley by herself wasn't fun even by day, but she kept her eyes lowered and her hand near her wand.
She knocked on the door to Atlas' flat, hearing Octavius barking and she smiled. That was a good sign at least, and then he heard Atlas' voice telling Octavius to be quiet.
"It's Minerva," she said to the door before Atlas opened it. Minerva balanced on the balls of her feet, waiting to be let in.