Why did she really?!

Why did Hedda really kill herself? A lot of my fellow colleagues say from her loss of power or because she is a wimp. I think that it is a combination of all of thses things. Shes looses her power over everyone. Lovborg dies because of the manuscript deal and the pistol she gives him, she has no type of real relationship with Tesman, Thea is becoming and opposition to her power, and you have Judge Brack who is one male figure that Hedda can not control. Along with this she could be put on trial for the gun givin to Lovborg. I belive all of these put together could cause major distress and leave a person pretty twisted inside.