After Beowulf slays Grendel's mother he chops off the head of Grendel. He killed Grendel's mother with a magical sword that he used to stab her in the neck.
he dies later on
Under water, where Grendel's mother lived.
She gave Beowulf Grendels claw.
Beowulf followed Grendel's mother's tracks to her underwater lair after she attacked Heorot. He dove into the lake and ultimately battled and killed her with the help of a magical sword he found in her lair.
The dragon is beowulfs song which most people don't' know cause it doesn't really tell you... and the golden horn Beowulf got from the king is a symbol. If Grendels mother has it he shall not attach but it soon comes back to it's owner and it comes back to Beowulf when he becomes king. So Beowulf and Grendels mother got to gather and he gave her another son, he just couldn't help it. so Beowulf really doesn't kill Grendels mother he just says he does.....
While Grendel's mother is hard for Beowulf to defeat, he IS able to use a sword, where as he has to battle Grendel bare handed.
In the story of 'Beowulf the Warrior' Grendel is the very first monster that Beowulf encounters. After slaying Grendel, he destroys Grendel's mother and a dragon.
Beowulf kills Grendel's mother by using a sword on her.
Fighting Grendel, Grendels mother and the dragon once he returns home to Geatland and is crowned king.
Beowulf fights Grendel's mother, and kills her. He kills her with a sword that was made by giants, and he splits her into two.
Grendel's mother takes his claw as a form of revenge against Beowulf for killing her son. It serves as a symbolic gesture to challenge Beowulf and his companions and to further escalate the conflict between them.
In the EPIC of Beowulf, she was slain by a sword made for a giant and sliced her head clean off in one clean cut.