I approached a girl at my school about 3 weeks ago and she was pretty shy/nervous when I talked to her. After a 45 minute conversation, she opened up and I got her number. Unfortunately, we couldn't meet for coffee because we are both busy (she even offered for me to visit her at work). I then text her when she was free and I got no response. 2 weeks later, she texts me saying she was busy and got a new job and school has been a pain (I would know because I was given a ton of work to do over thanksgiving break) and she asked how I was doing. Should I call her tmr and schedule a date or is this a red flag?