Alastor Moody naturally knew Mrs. Longbottom.
After a brief greeting, Su Er and Hermione followed him out of St. Mungo's.
Because Hogwarts restricted Apparition, Su Er had had no opportunity to practice. He still could not reach a distant destination accurately, let alone perform Side-Along Apparition with Hermione.
He did not have the bad habit of pretending he could do something he could not. Splinching himself would have been one thing, but what he wanted even less was to Apparate with Hermione only to discover that he had brought along half her body-
And so-
With a faint pop of displaced air, the three vanished from the alley beside Purge and Dowse Ltd.
"You're here..." Mrs. Weasley looked as though she had been waiting a long time. The moment she heard movement outside, she came over and opened the door before they could. They had not seen her for some time, and she had visibly lost weight. That was understandable: with a son who gave her no peace and a husband who had nearly died on official duty, it would have been strange if she had not been worried and frightened.
"And this is-"
"I'm Aibo. Hello, Mrs. Weasley." Su Er solemnly held out his hand.
"Oh-hello, hello-welcome-" Mrs. Weasley looked utterly puzzled and a little bewildered, but she still reached out and shook Su Er's hand.
Hermione covered her mouth, looking as though she wanted to laugh but did not dare. Unable to help herself, she stepped forward and whispered something in Mrs. Weasley's ear.
To reiterate, all the core members of the Order of the Phoenix knew about Su Er's situation.
"You've been picking up bad habits from George and Fred." Mrs. Weasley gave Su Er a reproachful swat. "I thought we had another new member I didn't