I’m sorry, dear fellow, Holmes would never strike an innocent woman. ;-)
He might have one of Gregson’s or Lastrade’s constables put one in irons, if necessary. :-D
.... While I do ponder your Deduction .... I Cannot help but muse upon the possibility that perhaps this Charlatan might have well been a mere Holmes Feign ..... Sent by Moriarity in an insipid attemp to destroy the Master Sleuth's reputation ......