Doesn't point out

Hi all. My daughter is 18 months old. She says about 6 words, she follows simple commands, she knows where some stuff is. When i ask her something she never point it out but she will answer with her eyes. Like when i ask her where is banana , she doesn't point out with her finger but with her eyes she will look where the banana is. Is that normal? How to maoe her pointout with finger? Pls suggest