I think Nozomi don't have forget about the death and honestly i don't see why she would have forget about her husband's death. Honestly i think she is just putting a facade for Shion, she want to be the shoulder who support Shion. Nozomi act strong in order to feel reliable for Shion.
That's how i see it. As for the Yuri road, it's everybody guess. Kuzushiro have made some Yuri(Inu to Neko and LOVE/DEATH just to name it) and even tease it a bit before with Nozomi's friend saying that Nozomi should try to make Shion fall for her and treating her like she treated her brother. I honestly don't know how it could end.