I remember that your younger daughter also started drawing early, right? That's amazing! My sister (twin sister, identical!) was like that also. She could draw these amazing pictures at 4 and 5. Me...not so much.
DD1 and DD2 both started drawing 'egg people' right after their 2nd birthdays. DD1 has always had more of an interest in language though. DD2 still hasn't really made the connection that letters make different sounds, whereas at her age (2.5) DD1 was walking around reading simple words on signs and freaking people out. She could also write words at 2.5, she could write the whole family's names and a few other simple words, and would copy anything I wrote out for her. DD2 on the other hand still cannot write any letters other than L. DD2 has far less interest in it, and also is much more social whereas DD1 is my introvert. Interesting to see their personalities and different capabilities!