" They follow the guidelines in our missalettes which follow those published by the USCCB."
Do they? I know for a fact that Archbishop Demetrius is absolutely against inter-communion. From whom have they gotten permission for inter-communion? In Orthodoxy this could only be given as a matter of economia and economia is the exlcusive province of a bishop. They apparently live in the Archdiocesan District. Their bishop is +Demetrius.
My suspicion is that they are confused by the remarks in your misselette and think what they are doing is OK. Tonight I've seen several comments from Roman Catholics that the Roman Church here persists in this unfortunate practice. In all honesty I think its time this become a matter for discussion by the SCOBA hierarchs or at a minimum by the Greek Orthodox Eparchal Synod so that an appropriate protest can be made to the Vatican through the Ecumenical Patriarchate. This looks like "backdoor" Uniatism to me.
When she came home and told me about it, I took it as a gesture of friendship and sharing on the part of those strangers who had been so vocal in encouraging her (and knew she was Eastern Orthodox). But she had been very offended by it, and she was almost angry when she told us about it later.