"wird man gefeiert" is correct in meaning, but grotesque. "man" is far too casual for a funeral eulogy. The sentiment of the Spanish source, in English, would be more like "In Heaven there is rejoicing for the arrival of an angel. I love you Mama." Note, by its word order the Spanish source puts emphasis on "angel" and "quiero". Eg: "weil ist angekommen ein Engle" and "Ich dich liebe".