Is a girl obligated to inform her family that she was raped before marriage, and what if the husband accepts the matter but doubts her truthfulness because she did not inform her family?

The suitor should not be informed of the matter unless it is discovered. Since he has been informed and understands, the parents or others should not be told. If the suitor doubts the wisdom of not informing the parents, let him know that the reason is modesty, that widening the circle of knowledge is not good, and that the fatwa was against informing them.