If the area your daughter lives in still has Children's Centres, they may be able to help. They usually run courses that look at different strategies for behaviour management in children under 5 which may be useful. As a start it may be helpful to ask what strategies the preschool/nursery are using and see if a bit of consistency with them helps.
Bereavement wipes out everything
What colour car do you have or did you used to drive?
Voting. I’m so glad we still have the ‘old fashioned’ system…

they have our lot climbing the wall.