I have a family relative who had grown up in the Church, is rather educated on what the Church teaches (or at least seems so), and has received many of the sacraments of the Church throughout his or her life, including communion, first reconciliation, baptism, confirmation (I think), marriage, etc...
However, this relative of mine no longer accepts the church's teaching on papal infallibility, does not believe the pope has been given Divine authority over the whole of the Church (although my family member does not have a problem with papal authority, only that it's Divinely mandated), has practiced and promoted contraception for himself/herself and for his/her children despite knowing that the Church clearly states it is a sin, and he/she does not believe going to a priest is necessary for the forgiveness of mortal sins. I am sure the list is much longer than that, but I think you get my point.
Now, assuming ignorance is not an issue (I know we can't know this for sure), has my relative been excommunicated according to canon law and the Church councils? If so, how can he/she come back to the Church?
Thank you for your time...as always!