Same thing happen when my son was 2.5 yrs old, he used to speak 4 to 5 sentences at a time, but with some words stuttered. (We speak cantonese) He is now three, no stutter anymore. I think it is just a phase that their language ability cannot catch up with their mind.
My son now sometimes speak very slow and monotone, especially when he is speaking to other kids. Most likely he is still figuring out how to use his language to describe what he think.
I think it is normal, but ask her pediatrician when she still stutter when she get older.
