Spoiler..
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I dont know about the first question but the answer to the second question is no, they wont get a divorce. They will fall in love later on.
If they both will fall in love. Does Pelhp still be the lover???
Nope
Then where she go if she doesn't be lover anymore?
I thing she gets killed.
1. Is the Duke Ephereny in the back stage of the last accident i mean he has the command from Pelhp???
2. In the end, is the empress divorce with emperor?? Cos i wish she will divorce with him, just like remarried empress.