CC has created a new category for transcriptions:

<rendition xml:id="Transcription_moderne">
  <desc>transcriptional</desc>
  <label>Transcription en français moderne</label>
  <code rend="rectangle" lang="text/css">color: #ffffff</code></rendition>

I've now added that to all the remaining files she hasn't edited yet, using a search-and-replace.