Can't you see it yourself?
You're a lady, and all that, I know.

But you're only a governess.

It's your interest as well as mine to wait till my father has provided for me.

Here it is in a nut-shell: if I marry you now, I'm a ruined man." The answer came, this time.
"You villain if you _don't_ marry me, I am a ruined woman!" "What do you mean ?" "You know what I mean.

Don't look at me in that way." "How do you expect me to look at a woman who calls me a villain to my face ?" She suddenly changed her tone.