If silver dragon scale mail is your only reflection source, or more generally if your only reflection sources come from your shirt and/or body armor, wearing a mummy wrapping over this prevents Medusa from seeing her reflection (though you are still considered to have reflection in all other respects).

Some Medusa buffs:

• Allow her to swim. (She can already fly, so this may not do much.)
• Give her a wrapping attack, flavored as crushing coils, which could possibly drown you.
• Her gaze has a reduced effect if you have reflection and not blindness, but not zero effect. Perhaps it begins slow-stoning rather than instant stoning.

5% of the time when Medusa is decapitated, she drops a “head of Medusa” item which can be wielded and used to petrify monsters, but only if the hero is blind (attempted use of it when not blind will petrify the hero).