This is legal as performed.
It is a braced release. She is not inverted during it so it is not a braced roll.
If it was inverted, it would not be a braced roll either because the top person is not in contact with someone on the ground.
If it was inverted, as in, if she dipped her shoulder lower, or her hips went high enough to be above her head, it would still just be a braced inversion. It would not become a braced “flip” because the hips didn’t go over the head (above is not the same as over). As a braced released inversion, it is still legal without the backspot because the rule for the bracer is “two people under the bracer, single base with a spot or double base without).