J.K.
This is completely normal for this age IF: she makes eye contact with people when she talks.
And she talks
And she plays "appropriately" with other toys. As in if she plays with instruments, she uses them AS instruments (in addition to perhaps using imaginative play with the same instruments as other items.)
The main thing to worry about is if she does not play with toys AS they should be played with.
(ie, if she plays with dolls, she plays like they are dolls. Or if she plays kitchen or food, she plays like it is a kitchen or food. ) When they do not play with more than one type of toy or do not play toy-appropriate play, is when you worry for anything under the autistic spectrum. My daughter did this organizing thing with her "little people" for months but she also played with them AS people and made up stories, etc.