it suprises me because I just looked up the rules in Luxembourg which are quite similar to German rules. The holy communion is the ritual for Catholics at the age of 8 or 9 years. Confirmation is only for protestants and the children are 14 years old. It is usually a great celebration with the whole family.
Therefore it is strange that Tessy who is so fond of big parties didnt have a big reunion. Also I remember pictures of her two sons at their respective holy communions when they were at the appropriate age, clad in white gowns and holding big candles.