ASKING THIS GIRL OUT?

i asked this girl iv liked for a while out yesterday and texed her hey you wanna hang out some time and see movie and she said yes and said that sunday was good. So i italk to her next day ask her what shes doing on weekend she says saturday she got work and sunday she doesn't know. What the hell is that sposed to mean just she just wanna be freinds or was the text not clear enough