I said to her that I needed a friend

I supposed to study my qualifying exam that day, but I couldn't do that. I was thinking about Angelina  all the time. I decided to send her an sms to know whether she likes me or not. I wrote for her, "Hey, what r u doing?" I said to myself, she won't answer if she doesn't care.

"I'm in ...[her city] right now," she answered after 2 hours on 11:52 P.M.
"'What' is different from 'where' I guess :) I just wanted to know did you do anything for the 'term paper'? And a few more thing...," I said.
"I didn't do the paper", she said.
"... I am tired of all these courses and exams. You forgot to tell me what were u doing?", I said.
"About to go to bed"
[some joking! and then good night.]
"Lol ok did you need something?" she asked.
"I needed a good friend who can understand me. Somebody broke my heart and... But not now. Now, I just need to sleep. I slept 4 am last night," I said.

I was waiting for her answer that I fell sleep. I got her answer tomorrow when I woke up. She had written, "Ok you can text me tomorrow if you need"
She wrote this one hour after my last message. I understood that she was confused what to tell me. By the way, she had decided to talk to me. This meant to me that she still cares about me, or at least she is curious to know more about me. However, part of her message, "if you need", was weird to me. If I answered her, this would be meant that I was needy to contact her. I didn't want to look needy. She could say, "if you would like" or something else. But I knew that there is a possibility that she didn't mean to say something to discourage me. If she wanted it, she could never answer it.

I decided not to contact her that day. Next day, I saw her in our class. I decided not to talk to her at all. She looked nervous, and sometimes she was playing with her hands. I've never seen doing this before. It sounds to me that she was very curious to hear from me. I am sorry Angelina; I didn't want to annoy you, but it was required to do that.