“When is it going to start curling?”
There are curls, kinks, and coils along with a huge variation in each group. There are different textures, so what you may see as a lack of curl may either be the relaxed ends or just the way her hair is in its natural state. It takes time for the hair to find its own way so please stop pressuring her to force her hair to do something it is not either ready to do or capable of doing.
“Why don’t you just wear it straight?”
This is a passive aggressive way of saying someone's hair does not look good. Everyone does not want to go that route. Take it as a hint that she is choosing to rock her transitioned tresses just as she has planned and does not need the ridicule. Not everyone wants or likes straight hair and many transitioners have found that using rollers, flexi rods, Curlformers, and the like allow her hair to have a more uniform look.
“Can you get a comb through that stuff/mess?”
Yes, I have heard this before and it cuts like a knife. It is rude, ugly, and uncalled for. Mind your business and keep it moving. Many transitioners use wide tooth combs or finger comb their tresses. Many naturals have put combs away altogether, so do not expect her to use the same tools or techniques she did with relaxed hair.
You can read the rest of my article over at Naturallycurly.com