Cannot see kids safari data anymore?

My wife and I have two children and we have always been able to see the safari searches they are doing. We recently had our niece move in and we can now see her safari searches, but not our childrens.

My wife and I share the same user name. We recently set up family sharing. My kids have ipods 5th Gen and my niece has a 4th Gen Ipod.

Can I please get a little insight as to how I get this information back?