dc is right, that is the bare minimum, and the school secretary generally notifies the baptismal parish of the fact of reception of first communion. However in this case, there is no baptismal parish, so it will quite likely fall through the cracks if you don’t do something about it. Please talk to the pastor today. There is no need to delay her reception if he is ready, but only he can discern if she is ready for the implications, in essence, conversion from her present religion to Catholic. and he will see to it that the fact of her reception into the church is entered into the baptismal record as well, so all will be in order when she comes for confirmation and marriage (or religious profession, God willing). above all don’t panic her about not being able to receive with her class, but do take care of business.