As one answer pointed out, the question is premised on a misconception. And, as at least one comment has pointed out, the examples are so brief as to leave uncertain the meaning intended to be conveyed.
Let's start with the misconception. "She's worked" in the sense of "she is worked" is not in the past continuous, which requires the present participle rather than the past participle. It is in the simple present, passive voice. Although grammatical, the contraction would rarely be used without context making clear that "is" rather than "has" is the modal verb being reduced because "work" is not frequently used as a transitive verb. "She's worked lightly" or "she's worked as hard as a rented mule" would be more typical usages because those locutions make clear that a passive, transitive use is intended: she is the object of another's action.
"She's worked" in the sense of "she has worked" is also grammatical while being unlikely except in a context where the use of the present perfect makes sense.
A native speaker would tend to avoid the contraction in these examples unless the context clarified whether what was intended was the present tense with passive voice or else the present perfect tense with active voice.