It's been a while since i finished the novel but i'm 100% sure that dane's distrust in love lies with the mother.

Yes they go along with the wedding. The sad thing is that Enrica doesn't remember what raphael told her (because she passed out because of the shock) the day before so he thoght that she was getting married fully conscious of the truth. When they talk after the wedding Raphael tells her that, the night before, he prepared for her money and a carriage to escape after knowing who kael really.
White reading this part i felt how raphael was sad and disappointed too maybe and i felt sad too

yes she will indeed pass out😅 and reading the wedding part in the novel made me a little sad

three snowmen