As much as Claire wanted to go back through the Stones to find Jamie, she was also very insecure about what her reception would be. She knew he was alive but nothing else. She worried about how she looked and if he would still be attracted to her. After she finally finds him at the print shop, she scopes out the room where he sleeps for evidence that it houses two people. And the 'partnership' with the women who owned the bordello caused even more worry. When she's confronted with the fact that the had married and not bothered to tell her it had to make feel that all of her worst fears had come true. In her position, I would have thought, "I've made a huge fool of myself!" She had to feel humiliated.