You seem to use the Creole "refè" to mean 'healing'. Could that also be used to translate 'redo', as in "please, redo the work."?

Yes.
refè (intransitive verb) → to recover, to recuperate, to be improved health-wise
example:
1. M'ap rete avè'w jouk lè ou refè.

2.  Depi manman'l te mouri a, li te tonbe malad.  Malerezman li pa't janm refè.

3.  Si ou vle refè, ou dwe pran tout remèd yo jan doktè a te preskri yo.

refè (transitive verb) → to redo, to do over
example:
4. Bòs la te bay yon travay ki te sitèlman gwosomodo, nou te oblije peye yon lòt moun pou refè li.

5. Si ou pa refè tout devwa ou yo, ou p'ap pase klas la.

6. Poukisa ou te refè twati kay la?  Eske li te koule?
   

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