I'm a little confused. Are you transitioning or stretching your relaxer? Like Rimi said relaxers change texture. They work by breaking bonds. So IMO trying to figure out a hair type of relaxed hair is a waste of time. Plus you can have more than one type on one head. If you are talking only about roots then you probably wont know until you cut off relaxed ends which will weigh your hair down or at least have a lot more than an inch and a half. I'm not sure what typical nappy is but you need to make sure you are conditioning your hair. If you straighten your new growth all the time you risk heat damage. Most of us use a leave in conditioner and then seal with oil or better to keep the hair moisturized. You have two hair textures with two different needs. I dont envy you because transitioning is not easy and not for the faint of heart. I would consider getting braids or doing twists/twistouts. You might also want a good trim on your ends because it has probably been awhile.