Aw Contrare my friends, Hedda was not bored, but trapped. A woman before her time, as most of Ibsen's female characters, unable to yield to the societal norms of the day. A strong, well educated woman existing in a time when permission to go out and about had to be asked of the dominant male of the house. The insurgence of the Industrial Revolution was taking place, the world was changing quickly, and with it old manors and chivalry was being extincted. These mores which Hedda had been raised to cling to were falling away for the world, but not for Hedda. They ran concourse to the blood in her veins.
Despite an inner strength of character and longing to dominate, inspire, and influence, she found herself torn between the new world and the way in which she was raised. Those values and their presence is signified by the silent character of her father, in the form of a picture that is continually refferred to.
When Hedda is overshadowed by Mrs. Elvstead in Lovborg's life she scrambles to make her mark, to have some influence. The nature of that inspiration is of no interest to her. As a madman who longs for fame and finds it in a violent act, Hedda does what she does for the power/influence in it, but not out of malice. Though we, the audience, may judge what her actions may have lead to, this is a moot avenue of perspective. It is "why" she does what she does that makes her such an intriguing character.