Historical Romance-Heroine is heiress run away from her wedding-dressed as boy-kill a man-giantess

Hello, I'm new here, not sure I'm doing this correctly.

I read the book about 10 years ago, even then it was not a new release.
It was a Historical romance, the heroine had been capture after defending her land during seige.
she used to have brother but he was sickly and died young, her father marry another, the stepmother become the cause of the seige.
The king(?) arrange for her marrige to the warrior that lead the seige.
He was a big man, so was she, she was called 'giantess of 'name of her land'.
Run away before the wedding took place, disguised as a boy, cutting her hair, kill a man before being found by her husband to be.
she was married by proxy since she keep saying no.
In her marrige bed, tried to kill her husband but they come to agreement that their people is more important, have to prepare the hall(?) for winter.
they eventually fall in love, defeat their enemy (neighbor) together.
I think in the final chapter there are scene where their bed collapse/distroyed because it was too small for them.

I think you did great, and I love your description. I don't know what your book is, but I hope someone else does -- I want to read it too.

Possibles (via Google Books search):

All a Woman Wants pub 2001
...Today she didn't appear so daunting, and Bea didn't feel so much like a giantess in her company....

The Protector pub 2008
..Anna de Leon is under my protection. If you try this, my sword will be waiting. If you do anything to put her in danger, I will kill you.” John's face twisted in annoyance. He rose. “You are ever the fool. If you want that giantess, I would gladly let...

Spring's Fury pub 1995
"Fortunate to be tied to the giantess of Ashby, with her cropped hair? The same ugly amazon who dresses as a man and wields a sword?" Her pulse steadied with these words. Gilliam lifted his brows in an expression of disbelief. "You are no ...

The Saxon's Daughter by Tara O'Dell pub 1998
...'Tis only the unwomanly giantess who fights." "Who is she, do you think?" Rob asked. "Surely not the lady of the manor. Look at this place. " He gestured toward the gleaming white-washed walls and rich tapestries, the herb-scented rushes on ...

The blurb from GoodReads: Norman Jobert de Brevriene was Edeva's sworn enemy. The handsome conqueror had claimed her family's manor, cast her into the dungeon, then swept her into his bed. Blinded by rage, she vowed to kill him, but the passions he aroused left her prisoner in his arms, betrayed by the body she had honed to warrior strength. She thought she could betray him as a spy—until she surrendered her heart.

An Enchanting Minx pub 2004
...Being a veritable giantess, she also towered over most of the ladies in the room, so watching the door wasn't a problem for her...

Consider the Lily pub 2005
...She had wanted to achieve the 'look' for the Season, but had failed - and who would want to dance with a Medusa-headed giantess...

With All My Heart pub 2002
...Anne felt like a giantess beside the dainty dowager...

Probably not The Maiden's Revenge pub 200 "...Though some of the ton whispered about the scandal and told third-hand stories of the hideous giantess who'd taken one of their number prisoner..." It's pirate-y!

It was Spring's Fury, been trying to find it for quite a while. Thank You lesmel for the help.

And whoa, that's eight books added to my TBR list between the two of you.

This site is a effect terrible on my free time!