I was thinking a Laser/L radial. The radial is actually designed for lighter sailors. Wish this design was out when I was a teen, nothing like trying to keep upright a boat designed for a 200 lb person.
Reality is, ANY of the vanguard built lines might work. Altho the laser frankly, if she "DOES" gets into racing.......what a way to start. Even if it is an older not in as good a shape as a new one. If she progress's, then you worry about a new one at 6K later. BUT< you can still get parts and pieces for them.
She drives me boat,
I drives me dinghy!