Eliza, in addition to her songs, has to pretty much do the entire role of "Pygmalion" as slightly altered by Alan Jay Lerner. Amalia doesn't lie that high, and a good soprano after singing in mostly middle voice won't usually find the high note of "Ice Cream" that difficult unless they blow out their voice by pushing their voice or screaming during the song just before "Where's My Shoe?". There are also more principal and supporting characters sharing both the score and book scenes as well in "She Loves Me". Yes, Eliza really does has a reputation as giving its interpreter vocal problems. Did Barbara Cook ever do Eliza in stock or regionally?