I have a question regarding a friendship: Should I give her some time to handle her business or just let it be?

This past February 20th, I received a friend request on Facebook from a girl who I never met. As we conversed, she turned out to be ok. We are good friends but letter, she admitted to develop feelings for me. I told her that at this time my ultimate priority is to find a job and kick start my career. So at this point I have no interest in having a girlfriend, but I'm not opposed to meeting new people. I've been jobless for almost 3 months and have received my Bachelor's Degree in Spanish from Arizona State University in 2013 (Without the ability to drive as I have epilepsy). She's going to receive her Bachelor's in Psychology in May 2016. I'm 27 going on 28 and she's 20 going on 21. (Her parents don't know about my true age). Entering this moth, she's gone missing in action (No reply to txt msgs or Facebook responses). This situation has never happened to me before.