Final answer:
The question asks about Beowulf's attempt to kill Grendel’s mother, which is not directly addressed in the provided extracts. Beowulf tries to use his sword Hrunting, which fails, then finds a giant's sword and succeeds in beheading her.
Step-by-step explanation:
The student's question pertains to a scene in the epic poem Beowulf in which Beowulf attempts to kill Grendel's mother. However, the extracts provided do not relate to Beowulf, making it impossible to answer this question directly from the provided texts. To correctly answer the student's question, one must refer to the actual lines 595-601 of the Beowulf poem. In that section, Beowulf attempts to kill Grendel's mother with his sword, Hrunting, which fails to penetrate her skin. Ultimately, Beowulf finds a giant’s sword in her lair, with which he beheads her.