Just diagnosed

My daughter Daisy was just diagnosed with Autism. She is 19 months old. She is already in OT, DSI and Speech Therapy. I called to get her into the long term care program here in AZ and they should call next week to set up an evaluation.we are also going to get her into the jump start program as well. Is there anything else i can do for her? I feel so completly lost and helpless. I am so scared that i will miss something or let her down somehow. I have another daughter Lily who is almost 3 and she does not have autism so I feel bad that Daisy gets all this attention and some how i am letting her down too. Any advice?