She needs to find her bass herself - there's so many variables that can make one a joy or an absolute pig: scale length, weight, neck profile/shape/radius, balance, shape, her height, shape, build, arm length, handspan, string gauge, pickups...
When she finds it, she'll need gig bag, leads, tuner, practice amp (strings aren't a regular purchase in the way they are for guitars - she won't be breaking them, just replacing when they're dead), strap and straplocks.
As a rule, though, I'd say a passive rather than active is a starting point and to try the Fender P-bass first. And shortscale Corts aren't particularly well made.