What did Professor Higgins declare about the flower girl?

Higgins said she came from Lisson Grove.

THE NOTE TAKER. Never you mind. They did. [To the girl] How do you come to be up so far east? You were born in Lisson Grove.

Higgins declares that she croons like a pigeon.

THE NOTE TAKER. A woman who utters such depressing and disgusting sounds has no right to be anywhere—no right to live. Remember that you are a human being with a soul and the divine gift of articulate speech: that your native language is the language of Shakespear and Milton and The Bible; and dont sit there crooning like a bilious pigeon.