When you are dealing with a mixed breed,there is no standard for what they are to look like. The offspring will have characteristics of mother,father,or both.They can also take on characteristics of the grandparents, including color,size,haircoat texture and length. By 15 months, the adult coat should be in.The coat may also change after the hair gets cut .Maltese coats are long and silky, the poodle coat is tight and curly(apricot and reds are a little coarser,than whites or blacks).Yes, this could be considered normal.She may be getting a dorsal stripe from te sounds of it. Sounds quite unique and flashy.