I need some relationship help?

i've liked this girl for over a year, we became best friends, apparently shes liked me forever too, and we finally started going out 4 weeks ago. everything was perfect, it was amazing. we were really affectionate and we both care for eachother a lot. the last day i saw her we both popped the 'L' word and had our first time. then things started rolling downhill. we talked a little less, and then a problem arose and we had an argument, but thats fixed now. she has major stress issues and shes stressed out from everyone and everything including me so she insisted on having a break (not from "us" but from all) to think and shes been thinking and we still talk but not like we used to and i think shes really confused and stressed and i asked her how her thinking was going and she said not good and i asked her to tell me and she said to wait for us to be in person and i asked her if she still loved me and she said, "yes and maybe. i dont know its complicated." do you think shes gonna break up with me? and is there anything i can do to alleviate this situation? i cant ever see her in person, but we've been trying to to talk things over. what should i do? :/