People are way too caught up in how many hands their horse is or should be - which is funny because most people don't even have an accurate height on their horse. Most are over estimated. Build matters way more.
But like Phyl said - you could ride just about anything you are comfortable on at that weight.
Up I am just under 5'5 at 110-115 and I've ridden from 14.0 lighter build ( which for me was a little uncomfortable) upto 16.3. While I prefer taller as long as they are wider and I am comfortable with how I feel size wise on them I'll ride anything :). My new gelding is about 14.3 not very wide but not little either.
I just bought him Wednesday but I've been riding horses under 15 hands for the past 3 years my trainers gelding I've been riding is barely 14.2 I believe but he is a stocky boy.
It honestly depends I've ridden both and really don't have a preference personally. I love my trainers horses in general ,mares and geldings a like, training has a lot to do with it but some horses of both genders will have personalities you just don't work well with, either suck it up or move on to another horse.
Falling takes years of practice!!!! I've been falling, crashing, and generally eating dirt for near 30yrs. After a while, you natural reaction is self preservation and it just happens lol. But back to horse hieght vs mass for a rider, I'm 6' 170ish. I ride our 14.2 QP and she don't mind a bit. But she STOCKY Though when I ride in daughters saddle I look like a jocky on a mini! It's halarious. Posted via Mobile Device
Yeah it really is a case by case as well as person by person. I know my trainers big show gelding hates woman but is an absolute doll for her nonhorsey husband hah. Oh and the falling thing I got into a habit of rolling into a ball when I come off but it has caused serious problems with my back. Im not sure there is a right way to fall haha.