Does Islamic law take into account the psychological state of a woman—for example, if she is going through a turbulent psychological period—if her husband desires sexual intimacy and she does not, and what is the evidence for that?

Among the purposes of marriage is the chastity of the spouses. The Sacred Law has commanded each spouse to respond to the other when invited to bed, and it is not permissible to refuse except for a genuine excuse. Psychological distress or lack of desire is not an excuse for this.