Are there any rhetorical devices evident when Myrtle kept shouting Daisy's name in chapter 2?
As far as the exact moment of the shouting, the only device that comes to mind is repetition. Myrtle repeatedly yells Daisy's name, until Tom's blow silences her (and breaks her nose). That's all I can name in those sentences. However, the paragraph following Tom's violence is marked by several devices. One example is parallelism. For example:
When he had gone half way he turned around and stared at the scene — his wife and Catherine scolding and consoling as they stumbled here and there among the crowded furniture with articles of aid, and the despairing figure on the couch, bleeding fluently, and trying to spread a copy of TOWN TATTLE. over the tapestry scenes of Versailles.
We also see, in that same sentence, alliteration in the words "stared", "scene", "scolding", and "stumbled"; and "Catherine", "consoling", and "crowded". There is also evidence of polysyndeton, in the repetition of "and".