Is the U.S. ready for the first woman president?
I think it is ready and has been ready for some time, not unlike France. Also, not unlike France, the only women to offer themselves have been unfortunate and dreadful choices.
Neither your country nor mine really have deep, societal qualms with women in leadership roles, despite what the talking heads liked to spew in their analyses after Clinton lost the nomination to Obama in 2008 and after Royal lost the French presidential election of 2007. Polls suggest that a majority of the US public has been "ready" for a woman president since the mid-50s (monotonic increase from about 33% yes in 1937 to about 92% today, crossing over the 50% in around 1955.) A similar trend is evident in France, with the "yes" voters in the majority in opinion surveys there since about 1968. Moreover, Wyoming and Texas were the first two states to elect female governors, and both did so in the year 1924. Over the past 92 years, 22 other states have elected one or more female governors. Thus, nearly half of the states have had female governors.
The next president of the United States will likely be a female; hopefully her presidency will not be so marked by corruption and incompetence that it will put the voters off all women candidates, many of whom would become effective managers of the state. I do think that most voters will not hold Clinton's presidency against all women, should her leadership prove faltering or deceitful, although only time will tell.