Does shyness in expressing love and a husband's false accusation of his wife lead to estrangement and a request for divorce, and is a lack of harmony between spouses considered a valid reason for divorce according to Sharia?

The wife erred by concealing her feelings of love from her husband; for shyness that leads to the neglect of rights is not a legitimate shyness according to Islamic law. She should ask for another chance to mend what Satan has corrupted. The husband must be reminded that divorce is the most detestable of permissible acts to Allah, and that it is a last resort, not for the first disagreement, and that it has detrimental effects on children. She should try to prove her innocence from the accusations leveled against her with evidence, and remind him of the prohibition of entertaining ill suspicions about Muslims. It is possible to seek the help of people of knowledge and virtue who can remind the husband of these meanings.