Gloria VanderbiltWomen's Amanda Classic High Rise Tapered Jean Plus Size

What is the difference between size 12 short and size 12 petite?

measurement inside the leg from the crouch to bottom of pants leg. Is it 30", 31", 32", etc.?

Do you have the Amanda pant that is Not denim?

I'm 5 5 1/2, and almost straight up 'n down. Waist and hips aren't that different. Length maybe 29. What size might work?