Poetic hero Sheila’s regularly seen with a battered hat (8)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

Poetic hero Sheila’s regularly seen with a battered hat <s> H <e> I <l> A (“regularly” means alternate letters only are used) + *(WITH A); “battered” is anagram indicator; the reference is to the 1855 epic poem The Song of Hiawatha by Henry Wadsworth Longfellow