I suppose the only questions there are whether or not her state allowed women to vote for president, and whether or not a candidate who cannot legally hold the office counts (since she was under 35). Because it wasn’t just blanket illegal for women to vote prior to the 19th Amendment, it was up to the individual states and like anything up to the individual states it was all over the place depending on which state we’re talking about. For example, New Jersey allowed anyone who had the equivalent of 50 British pounds of wealth to vote regardless of sex (and there are recorded examples of women voting there) - at least until they embraced Jacksonian democracy and removed the wealth requirement and added a sex one. By the time the 19th Amendment passed, women could vote in at least some elections in most states.