Her challenge to the DNC election dates from late February, well before the disagreement between Hogg and the party went public. It came right after she lost to Hogg and Kenyatta in an improperly conducted election.
Here is what she is asserting was done improperly:
DNC rules require that the national party's executive committee "shall be as equally divided as practicable" along gender lines. (If the committee includes members who identify as non-binary, they don't count for the purposes of gender division.) As DNC members met earlier this year for the multi-hour process of voting in a new slate of officers, the vote for the three vice chairs being the last position to be filled, it became clear that the party needed to elect at least one man to the final two vice chair spots to maintain the required gender equity on the seven-person executive committee.
The party then decided to hold a single vote to decide the final two slots instead of holding separate votes for each position.
Free claimed that the combined ballot unfairly benefited Hogg and Kenyatta, the only two men left in the race, because members had to vote for at least one man on the combined ballot. She argued it's possible they could have voted differently if the ballots were separated.
https://www.nbcnews.com/politics/politics-news/dnc-panel-recommends-redo-vote-david-hogg-malcolm-kenyatta-rcna206337