Though museums typically store their wet specimens in alcohol, some specimens may have been formalin fixed before storage in alcohol.  If this is the case, the material may actually be better quality than if it had been stored for years in formalin. Is there any record of this?  If the initial fixation and the long term storage were both in alcohol, then the cellular detail won't be as good as in material pre-fixed with formalin, but the basic tissue structure will still be there, and depending on what she is looking for she might get decent results.

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