A strange coincidence

From a 19th-century German novel:
Saint Michael by E.Werner

"Our coy little betrothed repents her treatment of poor Raoul yesterday, eh? Let it be a warning to you, Hertha. No man can endure such treatment, even at the hands of the woman he loves the best."

"Least of all, perhaps, at her hands. But do you imagine that Raoul really loves me?"

The general was startled by the tone of bitterness in which she spoke. "Has he not wooed and won you?"

"According to a family arrangement, in compliance with your express desire. I know the value of this love 'to order.'"

"Surely this is nothing new to you," said Steinrück, gravely. "You knew it all from the first. You both yielded to considerations deemed very important by those of our rank. There is no great amount of romance about such unions; but, so far as I know, you have never missed it."

What are the chances of encountering that precise relationship between a fictional 'Hertha' and a fictional 'Raoul'? ;-p