@ Whizzy-
Just get her out. If you must respond to "I think you're a chill guy," respond with something like, "Obviously, you need to get to know me a bit better," to spark some intrigue and make yourself sound like a bad boy.
@ Vash-
Reply with, "Hey now, no need to rush into this whole 'friends' thing, I'm not sure if I'm ready for a big step like that yet

What's your schedule like over the next week or so, miss?"
Better to turn this one around so it feels like she's chasing and being unreasonable. There's also a little bit of making her feel awkward for talking about "friends"... but just a little bit. Not enough to turn her off, just enough to discourage that behavior.
Chase