IMHO - I think using and octave on guitar is great when trying to achieve a cool bass tone.
Just don't get wrapped up in attempting to cop a "true" bass sound.
I think of the White Stripes and The Yeah Yeah Yeahs when i think of really cool and at times tasteful use of an octave pedal on guitar for bass runs.
I say journey forth and don't be afraid to embrace how the tech changes your music.
Though as a bassist, guitarist, and vocalist, AND songwriter I HIGHLY reccommend you get your frontwoman into woodshedding singing and playing more. Saying that she can't sing and play well at the same time identifies an area where great possibilities lie with practice.
Good luck with the pedal search.
Just don't get wrapped up in attempting to cop a "true" bass sound.
I think of the White Stripes and The Yeah Yeah Yeahs when i think of really cool and at times tasteful use of an octave pedal on guitar for bass runs.
I say journey forth and don't be afraid to embrace how the tech changes your music.
Though as a bassist, guitarist, and vocalist, AND songwriter I HIGHLY reccommend you get your frontwoman into woodshedding singing and playing more. Saying that she can't sing and play well at the same time identifies an area where great possibilities lie with practice.
Good luck with the pedal search.

