Look somewhat similar to the 'do you have brain damage?' meme. Wondering what it actually says.

It's kawayabug's Youmu with a hammer, whatever it is it can't be good.

Re: translation, with the sentence ending in "[comma] myon" is she talking to her ghost half or is that a vocal tic like Marisa's "ze"?

Nell said:

Re: translation, with the sentence ending in "[comma] myon" is she talking to her ghost half or is that a vocal tic like Marisa's "ze"?

It's a vocal tic, fans toss it into her dialogue like Marisa's "ze" or Patchouli's "mukkyu", etc. It's mostly us that nicknames her ghost "myon".