"Tomorrow" is usually kind of belted out - at least parts of it are. That'd work.

She could also do something like "You'll Never Walk Alone" or "Climb Every Mountain."


But I really do think she could also pull off some non-musical theatre type, more rhythm and blues or Motown songs. Or power versions of pop songs, e.g.:

Bridge Over Troubled Water
RESPECT
Ain't No Mountain High Enough
Because You Loved Me
Alfie
Unchained Melody
Blue Bayou