P.H.
Being a mother of three grown children and grandmother of four, I have had my share of troubles when they were little. I can assure you it will pass. It always does. I found taking my children outside even when it is cold, helped them sleep better and more soundly. I always had a routine of time for them to do this or that--dinner, bath, reading to them, then bed. They adjusted well to this, and on occasion would wake up at night. I recall my daughter having a few night terrors. She would be screaming and her bedroom was downstairs from ours and I'd run down to find her just sitting up, screaming and looking as if she was awake. She was not, and after a few minutes, would calm down and settle back to sleep. In the morning, she remembered nothing.
While my situation is different from what yours is with your daughter, I know it is easy to panic and take them to the dr when you worry. I would just advise you that it all will pass, and in time she will grow out of all and be just fine, and yes, you will get some much needed rest. It is sure rough sometimes when raising little ones. I now see my son and daughter who have children of their own going through these things, and worrying like anything. I tell them, they made it, and so will their little ones.
Hang in there.
P.