We had that same problem with my wife (5' even, 110 lbs). She owned a Bravo, but wanted something more challanging. She did not want to go the H14 route (old technology) though 3 of our friends own turboH14s, wasn't interested in a Wave (too Plane Jane). We went instead with a 14" Weta Trimaran. Lots of bells and whistles, but it is a new boat on the market (hers was #275) so we had to plunk down a wad of cash (we bought it through a Hobie dealer). It has good performance and can be easily righted by even small sailors (you just flood one of the pontoons and sit on it).
But I digress, SRM makes a good point, the H14 (I would go Turbo) may be a better choice for a small soloer. I soloed a H16 for many years (I'm 6'1" and 200+ lbs and needed a righting bucket most of the time (if it was really blowing I could get the wind to help enough not to need the bucket). If you want to keep with the H16 you might be able to combine a righting pole with a righting bucket and get the needed leverage. Regardless of your choice and if you solo BE SURE
you can self-rescue.