[1] Her PhD thesis, titled "Caesar and Rome: a study of Roman politics and administration, 49-44 B.C."
[3] Between 2013 and 2017, she served as honorary secretary of the Australasian Society for Classical Studies.
[7] Welch's research focuses on the politics and historiography of the late Roman Republic and early empire.
[8][9] Her 2012 book on Sextus Pompeius has been described as an "important contribution" and a "welcome reassessment" of the late Republican period,[10] and her chapter in the volume The alternative Augustan age was described as a "prosopographical gem".
[11] Her work on Appian has similarly been described as "important" for adjusting modern assessments of the ancient historian.