A.C.
Dear S. L.
Structure is the key in having a child sleep through the night. Set nap schedules, set everything at this age and stage.
I have watched the Super Nanny and she does one thing that truly amazes me. You put her to bed at a set time and if she wakes up, then you tell her it is bed time darling and place her in her bed. If she wakes again you say time for bed and then you put them in bed and then walk away. If they do it the 3rd time or more you say nothing put them to bed and walk away. Sure they might cry and yes it may break your heart, but you need to be strong. In a short period of time they will get used to it and a regimen will be set for you to have your time to relax.
Good luck.
A. C. - Hanover, PA.