Meanwhile, because Satyavati's mother thought that the oblation prepared for her daughter, Rcika's wife, must be better, she asked her daughter for that oblation. Satyavati therefore gave her own oblation to her mother, ate her mother's oblation herself

Expressions researched:
"Meanwhile, because Satyavatī's mother thought that the oblation prepared for her daughter, Ṛcīka's wife, must be better, she asked her daughter for that oblation. Satyavatī therefore gave her own oblation to her mother and ate her mother's oblation herself"

Srimad-Bhagavatam

SB Canto 9

Meanwhile, because Satyavatī's mother thought that the oblation prepared for her daughter, Ṛcīka's wife, must be better, she asked her daughter for that oblation. Satyavatī therefore gave her own oblation to her mother and ate her mother's oblation herself.

SB 9.15.9, Translation and Purport

Meanwhile, because Satyavatī's mother thought that the oblation prepared for her daughter, Ṛcīka's wife, must be better, she asked her daughter for that oblation. Satyavatī therefore gave her own oblation to her mother and ate her mother's oblation herself.

A husband naturally has some affection for his wife. Therefore Satyavatī's mother thought that the oblation prepared for Satyavatī by the sage Ṛcīka must have been better than her own oblation. In Ṛcīka's absence, the mother took the better oblation from Satyavatī and ate it.