Have we ever heard of a married synthetic at all, ever? Is it something they even do?
IIRC we've only seen two other AI couples: Jeremy/7 and Melon/Arthur and whether they are married or not hasn't been stated AFAIK. And IIRC we haven't seen any other AI/human relations at all.
FWIW, it's not in Jeph's style to write drama of this sort. If he did decide to have a human/synthetic wedding, I think he'd prefer to (and likely have more fun with) contrasting the traditions of the two species and making jokes about the resulting hybrid ceremony (FAYE: "I am not sticking a USB cable in my ear for anyone!").
It's more in his style that he'll have a Reliable Narrator like Momo explain that this has all been sorted out ages ago, possibly including telling the tale. My favourite idea is something like that Joaquin Phoenix film,
Her. A guy working for a bank that has an unembodied AI as its 24-hour trading monitoring and execution system. He pulls several night shifts and gets to know her (and the system very clearly identifies as female). Gradually, they fall in love and she ultimately takes up a buy-out of her contract, gets a anthropomimetic chassis and the two get married (and even adopt a kid).
Momo notes that the Supreme Court ruling was actually not close but that, to this day, many continue to fume about the extension of equal rights to that degree. Maybe Momo will note that the lady in question actually now teaches pure maths at Smif and all the students she's spoken to agree that she and her husband remain extremely in love. Another interesting twist would be that she was quite rich because of her bonuses from her smart trading; it was her money that partly paid for the development of highly-anthropometic chassis that exist in the present.
[EDIT - PS]
Maybe this was the test case that led to the AIs being granted equal rights with humans?