You can only have one SIM per account/email login/membership.
https://48.ie/help
Does 48 have family accounts?
We currently don’t have family accounts but that’s not to say you can’t invite your family to enjoy all the benefits of 48. Each of your family members can sign up with their own email and password giving them full control of their My48 account and My48 app. If you’re the chief financial officer of your household then don't worry you can register your payment card to each individual account.
But you can use the Recruit and Reward scheme to get your daughter her own SIM/membership/account and both of you will get rewards that way.
https://48.ie/recruit-and-reward
