Some tips or hints that she wants more actions! (SERIOUS ANSWERS) ?

So this girl invited me to her place (lives alone) so we can start a group project mind you that i hardly have talked to this girl but shes always smiling when i talk to her..but ya she asked me if i smoke weed and that i should head to her place to burn a blunt and start this group project but its funny cause theres this other guy but she only invited me! I want to know if i should make a move? And if so how can i set the mood that i want to make out with her or even down right **** her cause it seems like she wouldnt just be invitin me to go smoke a blunt and do a group project with the other group memeber missing and when she barely even knows me!