THE INVISIBLE MAN by H.G. WELLS
Sovereign:king or queen / British gold coin used in the past.
Haggler: to talk or argue with someone especially in order to agree on a price.
Ill timed: bad/wrong timing.
Her face was eloquent of her surprise and perplexity: Her face was clearly showing…..
Without giving the ghost of an excuse for the intrusion: Not even a little excuse.
She did not make so bold as to say: She did not dare to say ….
… was screwing up her courage: messing up her courage.
On the morrow: tomorrow.
Excruciating: agonizing or torturing.
You’re simply humbugging: deceiving.