Would you say this girl has issues?

I am recently divorced and back in the race so to speak. I am dating this girl who can be sooo great at times and other times seems completely distant and aloof. We have been dating for 3 months and have been physical. Probably a little fast but nothing to crazy. One time she ignored me an entire day while when were were hanging out and when I asked her what why she couldn't explain and just didn't want to deal with the issue. I let it go and pretended like everything was cool. Now, the other day, after a wonderful dinner, I told her I had feelings for her (just like that...not "I love you") and she completely shut down and couldn't talk to me. I was hopeing for "I have feelings for you too" or "I think we should just be friends". Either one really would've been fine (i can handle rejection no problem) but she just left without saying anything...literally. Are some people just unable to talk about serious things or feelings? Obvious red flags so I am going to stop persuing...thoughts?