Friends But Not Really

There's this one girl who I'm on good terms with but she's so very eccentric that it's hard to talk to her. She's extremely nice but she also has a tendency to say some kinda out of pocket things even if someone does something relatively harmless like question her on some way. She love bombs waaay too hard by buying people gifts and giving them stuff from her house for free even if its their first time meeting her on person. She claims to know all about me. She even lies about who she knows whos famous. I wanna cut her off but we just met and shes already given me so much stuff as gifts.  Help???