That is not the point of attending the mass, please read up on liturgy and understand why mass can be said, even without any people present, and the liturgy is the Church's most divine prayer and offering of thanks even without communing.  


It is not about people being judgemental, it is about Jesus being judgemental, like I explained to you she could easily go up for communion and the priest wouldn't notice. 
It is not as if we Latin rite Catholics are called for communion by name like in the Eastern rites, so she wouldn't be turned away.