Is it permissible for an unveiled woman to perform Hajj while she is unsure of her commitment to حجab after Hajj?

A woman must perform the obligation of Hajj if she is physically and financially able and finds a mahram (definition), whether or not she observes hijab (definition). Hijab is an obligation upon her before and after Hajj. There is no correlation between Hajj and hijab; Hajj is a pillar of Islam, and hijab is an obligation upon the Muslim woman. A woman must cover her entire body in a way that does not define her limbs or show anything of her body. She must adhere to hijab and perform Hajj, and her obligation of Hajj is not waived due to her non-adherence to it in the future.