Bellatrix is a devoted and violent subordinate of Voldemort.
Bellatrix Lestrange is present at Voldemort's meeting and later acts on his side during the pursuit and the events at Malfoy Manor.
They belong to the same hostile organization and operate under Voldemort.
Bellatrix and Lucius are both present among Voldemort's followers at Malfoy Manor.
Bellatrix helps enforce the captivity and threatens Harry's group.
Bellatrix is present at Malfoy Manor, where Harry is imprisoned and later escapes during her attack on the captives.
Bellatrix is part of the force holding Ollivander prisoner.
Ollivander is held in the cellar at Malfoy Manor while Bellatrix controls the manor and tortures another captive upstairs.
Griphook is trapped within Bellatrix's hostile stronghold.
Griphook is encountered among the prisoners in the cellar of Malfoy Manor during Bellatrix's control of the house.
Related entry on Wikidata (Q1057918), public domain (CC0).