Liza plaintively asked whether anyone else had been, and sighed a little when her mother answered no.
"Liza of Lambeth"
W. Somerset Maugham
She protested almost plaintively when Katharine proposed to go upstairs.
"Night and Day"
Virginia Woolf
"I wonder if we could talk of anything except trouble and war," replied Lenore, plaintively.
"The Desert of Wheat"
Zane Grey