Why didn't she text back?

Ok so I approached a girl in a hallway at my college and started talking to her. Our conversation was going quite well and when I gave her a high five she acted like she wanted to hold my hand. She was playing with her ipad and wanted to take a photo with me. When she was getting ready to leave I asked for her number. She gave it to me and asked for mines as well so we exchanged numbers. I texted her early in the morning two days later saying, "good morning cutie, just wanted to put a smile on your face after you've woken up." It's been a full day since the text. She also has two jobs with school so I know she's busy a lot. Do you think I should text her one more time because I thought she liked me.

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