I was going to say that she must speak English after all these years, but googled and found this:
Columba Bush, long and awkward presence in the Bush family, speaks English haltingly and has rarely joined her husband on political stages. When Jeb became governor, she spent less time in the capital of Tallahassee than she did in their home near Miami, where the family, including Jeb, all spoke Spanish. Signs of trouble first emerged in 1999 when she went on a five-day Parisian shopping trip and bought $19,000 worth of clothes and jewelry and tried declaring only $500 at Customs (to hide the expenditures from her husband, she said). After the ensuing media debacle, she was kept out of sight. “My wife is not a public person,” Bush said at the time. “She is uncomfortable with the limelight, which is why I love her. I don’t want a political wife—I want someone who when I get home I can have a normal life with.” Source
Funny think is that Bush is saying that all the illegals he wants to let stay should be required to learn English, but not his wife who has been here for over 40 years!