I am by no means an "expert" but here are some things I suggest based on the month I just had after my husband was diagnosed in Dec.:
Find a few friends who you can call when you are feeling overwhelmed. Talk to others so you can be strong for your daughter. Let your husband vent to you but also be honest with him about how you are feeling. Use your support system to hold you up as much as possible.
Mornings were/are a bad time for me so I set up a daily call with my friend for the first few weeks.
Talk to your doctor (primary care) to get help with sleeping. If you need to take medication to help DO IT. If you need to have a physical, have one. If you need help finding a therapist, get one. Just like on a plane when they say that if you have children you need to administer your oxygen mask before you can help your child, you need to.
If you can take time off from work (if you work), DO IT. Let yourself plan, learn, sleep, read and spend time with your husband and daughter. It will make you feel better to be with your family.
Take car rides to just cry and process (makes it easier to cope at home).
Call your local ALS Chapter (Upstate New York) and ask for help.
Contact Us - The ALS Association Upstate New York Chapter
Talk to your husband's doctors if you think it will help -- Find hope and encouragement where you can. Ignore the people and the things that stress you out and seek out the people and things that make you feel calm.
Decide that you are going to do what your husband needs and give yourself over to it completely when you are ready. It will make you feel in control and that you have a plan.
Hang in there -- I know I sound all big and bad in this post (and bossy - sorry!) but I am still in shock some days. I am so sad and angry that my family is going through this but most of the time, I am okay. For now. I did not feel that way a month ago (he was diagnosed on 12/5).
I'm so sorry you are going through this -- it is terrible and unfair.