the first mmr is at age 12 months. the second mmr is between the ages of 4-6 years. just before kindergarten. you really do not want to get the second mmr before age four since some school districts will disallow it and your child will need to get a third test. since i do not know the age of your daughter (an important bit of information you omitted) i would suggest that you consult her pediatrician. in some areas where there have been many cases of measles an earlier vaccine may be recommended by the health department.
is it safe for my daughter to get the 2nd mmr vaccine 6 months early?