Is it permissible to keep pictures of a veiled girl without her hijab, knowing that she does not show them to men and considers them memories?

A Muslim woman is not permitted to keep pictures of herself in which parts of the body that are not allowed to be displayed are visible, if there is no guarantee that foreign men will not see them. This is to avoid exposing a Muslim man to what Allah has forbidden. However, if such a guarantee exists, then there is no legal impediment to keeping them, based on the permissibility of doing so. Nevertheless, it is better to avoid keeping such pictures out of piety and to steer clear of doubtful matters, especially if they are from a time when one was not fully committed [to Islamic dress code].