so sorry about the loss of your daughter that must have been so very painful for you I think things do catch up with us especially if, as is natural we focus on distraction,are not able to talk about the loss or have some useful fount of all wisdom telling us to move on -and even without all that its a roller coaster journey and we find ourselves back at the bottom of the pit often when we least expect it.
Everyone here has lost some-one and you are always welcome to post here but alongside that, if you are on facebook we have an associated group there, specifically for others who have lost a child
https://www.facebook.com/groups/1608455646128781/