While some prefer family members, including in-laws to assist with postpartum care, do consider the individual needs and preferences of the new mother.
Physical Exhaustions:

Mothers or in-laws are usually of retirement age where their body might not be able to take the stress from sleep deprivation, manual chores and the constant lifting of newborns. If the elderly are unwell or carry infections, there is a risk of passing them to the new mother or newborn who are both the most vulnerable during the postpartum period.
In addition, the elderly might expect the new mother to participate in the household chores or caregiving tasks which would be a great hindrance in the recovery process.
Parenting Choices:

Different people have their own beliefs and parenting styles. Having an in-law present during postpartum might lead to differences in opinion on how the baby should be cared for. It can easily spark tension and create unnecessary stress for the new mother.
Privacy and Comfort:

The postpartum phase is a time of both physical and emotional sensitivity for new mothers. Many women seek the space to form a strong bond with their newborns without the constant presence of extended family members, even if their intentions are well-meaning.
Moreover, having family members around might inadvertently impact the new mother's self-confidence. The pressure to appear put-together and perfectly capable in front of in-laws can add unnecessary stress. A supportive environment that allows the new mother to embrace her vulnerabilities without judgment can be invaluable during this period of adjustment.
Cultural Differences:

All mothers have different preferences on how postpartum care should be and to what extent. There are chances that their beliefs are not aligned to their how their in-laws think. This can lead to conflict from the discomfort of both parties.