She performed hajj without her mahram

Reference: Fataawa ash-Shaykh al-‘Allaamah Muhammad Naasiruddeen al-Albaanee fil-Madeenah wal-Imaaraat – Page 123
Fataawa al-Madeenah – Page 50

Question: Is the hajj of the woman [who travelled] without her mahram nullified?

Response: [No], it is not nullified, rather, she has sinned [by travelling for hajj without her mahram].

Translation originally published on 31 October, 2014.