Lady Bracknell (to Cecily): Pretty child! your dress is sadly simple, your hair seems almost as Nature might have left it. But we can soon alter all that. A thoroughly experienced French maid produces a really marvellous result in a very brief space of time. I remember recommending one to young Lady Lancing, and after three months her own husband did not know her.
Jack: And after six months nobody knew her.
(Bolding my own.)
What does "nobody knew her" imply and is Lady Bracknell now recommending this maid to Cecily too for a makeover?