Why is daughter’s pension delayed due to family house?

I applied for the pension of my unmarried daughter. Although I have submitted all the required documents, the department is delaying the processing of the pension. I recently learned that the delay may be due to a house that was purchased by her father through a loan. The house has not been divided among the heirs yet, and the entire family is living in it. The family includes an elder sister, an elder brother, and an unmarried sister.