Enola Holmes is in charge. The case of Lady Alistair. Book 2

Once alone in London, Sherlock Holmes' younger sister Enola lives a secret life, has several disguises and conducts independent investigations. Ever since her mother disappeared, the girl has also left home, not wanting her brothers to find her.
Once, disguised as Dr. Ragosten's secretary, Enola receives Dr. Watson. He reported that Sherlock Holmes was desperately looking for his sister, as well as the disappearance of a young man whom Sherlock did not investigate.
Will Enoli be able to solve this case and at the same time not catch her brother's eye?
For middle school children.