Cryptography

Hannelore's comment in panel 3 looks like it's merely English text shown in a very weird font.  I'm not sure if I've got the brain cells to try to parse it at the moment — the glyphs are twisty and the text sample size is small.  The first character is probably an 'A' or an 'I', of course.  I think that the fourth word has an apostrophe (sandwiched between two identical letters, which should be a strong clue), the second may have a hyphen, and the comment ends with an exclamation mark.

 "Hannelore Fhtagn" indeed.