11 - Elle a dit au revoir trop souvent avant
You could replace:
* "dire au revoir" by "saluer" (which used both for greeting and farewell so you get a bit of data information lost)
* "trop souvent" which uses the "trop" adverbe when there is a word for it: "excessivement"Which got me:
11 - Elle salua excessivement avant
Still as many syllable (4) but less words (from 8 to 4) which might be easier to read.