rather you should ask "Is the church dogma so ridiculous that they really have to ask such a question? i.e. where in the bible is 'wheat' the only way to receive communion?"
Where does the bible say Christ founded a book and not a Church?
The child suffers from a rare and unusual disorder which prevents her from participating in customary Church traditions. There is no doubt that the Church will find a way to accommodate the child once the slow wheels of Church bureaucracy become better informed as to the nature of her disability. Until that happens, there will also be plenty of opportunity for anti-Catholic bigots to denounce and belittle the Church.
Jesus used unleaved wheat bread. He didn't use cake. He didn't use barley. He didn't use peanut butter. He didn't use fried chicken. Your quarrel is with Jesus, not the Church.