is she interested ???

I just met this girl sometime this week. she initiated a conversation with me several times. she asked me questions and we laughed a bit. when she was talking to me she was preening her hair back and forth but that could be because she has a habit of doing so. I felt from her eyes that she is interested but i still had doubts.

a friend of mine gave me her number, i prank called her and this was the conversation

me : hhhhh it is a prank call
her; I knew it is prank call it was obvious who is this?
me; I am X
a moment of silence
she gasped happily
her; ahhh why you did this to me hhhhhhhhh why why
her is this your number
me yes it is
me; how are u doing
she was really enthuasiatic and happy
her; I got a cheap flight to my country for three days this Thursday
me; I thought we could hang out on thursady
her; mmm my flight is at six o clock, why dont we go tomorrow
me; mm i can't
her; why you can't you have other commitments
me yes I do
her no problem we can go out anytime during the week after i come back

I texted her during the week and asked her do you want to hang out on Thursday and she sent me message after 1 hour ' ''yeah certainly and I would love to ''
i asked if this time is ok
then she sent me a reply within 2 minutes
"" yes yaaaaay"