How can a female student deal with the presence of her male cousin in the house after her intention to wear the niqab, knowing that his presence currently restricts her?

The mixing of strange men and women is dangerous, especially among young people. The Prophet, peace and blessings be upon him, warned against the temptation of women. It is obligatory to observe hijab and prayer, and to promptly adopt the niqab. There is no harm in cohabiting with a cousin (son of the maternal aunt) out of necessity, provided that seclusion (khalwa) and speaking in a soft, alluring manner, and anything that leads to temptation are avoided, along with wearing the hijab and covering the face. We ask Allah to facilitate her marriage and move her to her husband's home.