On his quitting the room she sat down, unable to support herself, and looking so miserably ill, that it was impossible for Darcy to leave her, or to refrain from saying, in a tone of gentleness and commiseration, "Let me call your maid.
There are no more uses of "commiserate" in the book.
Show samples from other sources
I prefer to celebrate or commiserate my kissing in private.
Gayle Forman -- Where She Went
When I was born, people in our village commiserated with my mother and nobody congratulated my father.