His reaction said everything, he was shocked that she took what he said literally. Merope couldn't take the heartache of it all, she stood up and looked at him,".....Nevermind, nevermind." Instead of wanting to talk it out, she'd figured that he just wanted her for a cheap lay or some kind of manly desire.
Merope was there, in his house, he had every right to take what he wanted.
She shouldn't be offended or hurt, but she was. She got onto her feet and walked away from him and went into her room.