Why wasn't she charged by Bragg?
The campaign fraudulently claimed that the cost of the fictional Steele Dossier was a "legal fee". The information that this was actually a piece of opposition research was kept from the voters. Suppressed.
The FEC enforced this action against her campaign. No federal action was taken at all against the Trump campaign.
Link: https://www.axios.com/2022/03/30/fec-clinton-dnc-steele-dossier-funding