According to Steve Huey on the "All Music" site ... (and re-quoted around the net) ... "She (Betty) spent 1958 and 1959 on the road with Miles Davis ..."
Is there any evidence for this? 1958/9 was a peak period for Miles with Coltrane, Cannonball, Gil Evans, Bill Evans etc. I've dug around a little but can find no references to Betty with Miles at this time. Maybe someone has some information to share ... Q