"She'll" is a contraction of "she will," and therefore, its synonyms are directly related to its meaning. Some common synonyms for "she'll" include "she shall," "she's going to," and "she's intending to." Other synonyms may include "she is going to," "she plans to," and "she intends to." These synonyms are useful in situations where you need to vary your language or when you want to avoid repeating the same phrase. By using synonyms for "she'll," you can add variety to your writing or speaking and communicate your ideas more creatively.