I plan to obtain a recommendation letter for PhD from a recommender with whom I have worked a lot during the course of my bachelor's. However when I accidentally typed her name in Google, a copyright violation notice by IEEE in her name shows up (sample). It identifies the paper that included the copied text, says something like
After careful and considered review of the content and authorship of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE's Publication Principles.
This paper contains portions of text from the paper(s) cited below. A credit notice is used, but due to the absence of quotation marks or offset text, copied material is not clearly referenced or specifically identified.
and specifies the original source of the copied text. This violation has nothing to do with my work with her.
I am afraid this shall reduce the credibility of my work. Besides, I am loath to approaching other professors because I have worked much less with them and do not know them as well as this recommender. What should I do? Go ahead with her recommendation despite, or seek another recommender?