Man... i really do not like this situation ^^
I feel like she is actually playing with you. She probably has some interests at the moment.. but she's totally in control and i also gt the feeling she will los it in time.
Stuff like:
"my night was shitty cause i didn't get to spend time with you"
can be a damn killer in seduction.. well not killer.. more a suicide. a probably better answer would have been:
"GREAT! it was so much fun.. i've drank with these guys i just met.. and talked about the most amazing subject ever.. you would never imagine what it is... guess? we've talked hours about how snails reproduct (

). then this chick came by completely drunk and tried to kiss all of us.. only that when she went for the kiss on my new pal she felt bad and had to escape to the bathroom.. ahaha.. and what about yours?"
( ok i made it up...best thing ever would be to actually... HAVE FUN during the evening so you can tell about real stuff )
see my point?
good thing would be to make her WANT to go out with you... not only to let her know YOU want to go out with her.
Don't get me wrong tho.. she probably has some interest in you at this point ( not that awesome interest but some.. she prob does ), but there are very high chances of:
- Her interest fading
- Relationghip going shitty if you manage to get into it.
Of course.. just my personal ideas and i could be wrong ^^
hope that helped.