IMHO it depends how far you two have gotten in your recovery and how well you two can respect borders.
It’s common that spouses ask each other to stay off threads. Can you respect that? Can she respect that? Would that be a requirement?
One of the key risks IMHO is the basic human need to win. It’s something that drives us on, but can also work against us. If you enter an argument your goal is to win, to argue the other person down. If you can’t do it with logic you fall back to other patterns.
Now – in business its called negotiations rather than arguments. I business we accept that negotiations generally are give-and-take. You give me this service and I will let you take this payment sort-of-things. In business if there is no give-and-take and a dialogue then there is no business.
We can try to apply the same logic to relationships.
In personal life it takes a certain level of maturity to understand that a) you don’t have to "win" all arguments b) you might be wrong on some issues c) you might have to make concessions on others and c) "win" in a relationship is a mutual win.
For example: My wife and I don’t share the same views on how often the bathrooms need to be cleaned. She says weekly, I say when needed… Theoretically my POV is correct, because "when needed" is not necessarily every 7 days. It could be needed after 3 days, or 30… It’s the 30 that my wife fears, so her compromise is weekly. We could argue about this if I wanted to. I could logic her to the curb, and if I did she would probably use her traditional defense of sleeping on the edge of the bed her side, not talking or moaning about my family… (I probably have equally obnoxious behavioral patterns when I lose arguments…). Instead, I clean the bathrooms every Thursday evening when I come home from work…
I don’t do it with resentment. I don’t grumble. I accept that it’s a compromise that works for my family. I don’t have to "win" the big bathroom-war at the cost of my wife. The demand was reasonable, the need was clear, the benefit of complying outweighed the cost of arguing.
I realize infidelity is a bigger issue than pee on a toilet bowl. But you get the gist… If you two have reached a stage where you can discuss things openly, where your goal is to reconcile and both are willing to work to that goal… then sharing SI can be reasonable.
Finally – despite my comments on give-and-take and compromises. There are issues in a marriage where there should be no compromise. Fidelity being high on that list.
"If, therefore, any be unhappy, let him remember that he is unhappy by reason of himself alone." Epictetus