Does the fiancée's request for a boisterous wedding celebration immediately after the death of the fiancé's father constitute a valid reason for the fiancé's love for her to diminish?

There is no harm in postponing the wedding due to a death, as this is a common practice. However, a wife's request for a wedding celebration that includes music and songs is not permissible due to the prohibition of songs containing musical instruments. The husband must gently persuade his wife of the impermissibility of such celebrations and propose a permissible alternative.