Another name for them is Interrupter levers , because you interrupt the housing and cut it, to install the brake lever..
cable is unbroken spreading the housing is like pulling the cable..

Need Aero Brake levers, which will already have the brake cables under the tape, Brifters work too .

A bit of a challenge to find a middle ground as the leverage/ cable pull is lower on the aero lever on the end of the cable,
than the interupter lever in the center.

there are Guidonnet levers too, Velo Orange got a few, they are made to use on the tops of a road bend bar, instead of the race bike type levers,
if the reach is too far consider another handlebar type entirely

womens design frames shorten the top tube as top half of female torso is typically shorter.
Bike may be well sized vertically but not horizontally.