So I've been atempting to decipher this world's alphabet. It's interestingly not gibberish! From what I've partially deciphered, the actual text seems to be German! But it doesn't exactly add up, because German has a 30 character alphabet, not 35. So I still have some mystery characters that I don't know what they mean. See Corinna's invitation to Main, for example. Here's my attempt at deciphering:
"einladung
?t main
? glocke zu viel
corinnas haus.
??o freuen uns darauf
zu freuen.
Corinna."
Maybe someone that is actually German can try to deduce wha the mystery characters are?