Nope, she has been following Opinion polls since forever and changes here stance on a subject, when public opinion shifts. That is how she has stayed in power so long and she will stay for a while longer because public opinion is still favourable of her, even with the recent decline.
Also the only parties I can think of that want a German EU exit are the ALFA (original AFD founders, who left the AFD do to them going to right wing, but they want the Dmark back more then a Gexit) and the AFD that has gone full retard, since the split.