THEY might maintain separate homes more than 150 miles apart, but Doris Schröder-Köpf, Germany’s first lady, is emerging as her husband’s most influential adviser as he struggles with plunging poll ratings and rumours of a palace coup. Gerhard Schröder, the chancellor, has long sought advice from his fourth wife, a former political journalist, despite her decision to bring up her daughter from a previous marriage at their home in Hanover. Yet to the dismay of many in his Social Democrat-led coalition, Schröder appears increasingly dependent on her since his narrow re-election in September, telephoning her up to five times a...