exactlywhereiam

Hey all, So I received an email notifying me that I had been placed on a waitlist about a month ago. The email was very kind and encouraging, and the DGS didn't ask me to send any additional information; she just said that she hoped I would stay in touch and that I should feel free to contact her with any questions. Well, my anxiety got the better of me, and I never managed a response (by the time I had decided that I should have responded, it felt too late. I now realize that that was a mistake). I've recently been rejected by a couple programs, and I'm getting nervous that I haven't gotten in anywhere yet. I'm enthusiastic about the program that waitlisted me, and I want to express that I'm still very interested. I feel like I should send an email confirming my interest, but I'm feeling horribly awkward about it, given that I didn't respond to the waitlist email that I received a month ago. Two questions: 1) Real talk: how badly did I screw up by not writing back immediately? 2) Any suggestions on how I should go about emailing the DGS--or is it too late now?