Fausta was also Sulla's daughter. No doubt she was capable of improvising! Are you familiar with the (different) solution Stephen Saylor offers ot the question of Clodius' death in A Murder on the Appian Way, which is one of his Roma Sub Rosa novels? In the afterword, he mentions: Fortunately, in the next century the scholar Quintus Asconius pedianus wrote some study guides for his sons to use when reading Cicero's orations, and one of these surviving commentaries analyze the Pro Milone. It reads today as a sort of percursor to the "true crime" genre. Asconius gives us fascinating details about the desperate parliamentary maneuvers and frantic damage control by both sides in the wake of Clodius' death. He describes the nuts-and-bolts conduct of the trial, including the selection of the jury. Most important, he gives us an account of the murder completely at odds with the one Cicero puts forth.

re: Fulvia: unfortunately, to my knowledge she only ever has been a guest star in novels about other people (usually Cleopatra, but I've also read one about Octavia) and hasn't had one about herself yet. Including, btw, A Murder on the Appian Way, where she and Clodia are the main "guest" characters (in addition to Cicero, Milo and Fausta, of course); Fulvia is the one to hire the series' detective, Gordianus, in order to find out what exactly happened to her husband. (Saylor has fun with a bit of foreshadowing as Antony briefly shows up to pay a visit to Fulvia, which makes Gordianus wonder whether due to his obvious interest in the widow he could be a suspect, but then realises he's not.)