She also accused Lopez Obrador of using "the full apparatus of the state" against her.
Lopez Obrador cannot run again because Mexican law restricts presidents to a single six-year term.
It is not the first time Lopez Obrador has published financial information about a political adversary.
Last year, Lopez Obrador released the purported earnings of journalist Carlos Loret de Mola, a prominent critic of the president.
Lopez Obrador touted the amount of business Galvez had supposedly won during a regular press conference earlier on Friday, prompting Galvez to challenge him to back up his claims.
Persons:
Andres Manuel Lopez Obrador, Lopez Obrador, Xochitl Galvez, Galvez, Lopez, MORENA, Carlos Loret de Mola, Kylie Madry, Dave Graham, Will Dunham
Organizations:
MEXICO CITY, Twitter, Regeneration, Thomson
Locations:
MEXICO