I hate that Shizuka never answer Mio interrogation, merely deflecting it under the umbrella that it won't happen
Same
At this point though Mio has seen multiple times how fixated Shizuka is on Kaoru, so if she really plans to continue the relationship she has no one to blame but herself if things go bad.
I mean how stable can a relationship possibly be if just a passing comment by Kaoru has the ability to undo all their progress, heck just the possibility of it is causing so much stress.
I mean it's not like she could give a satisfactory answer without falling right back into her old bad habit of lying through her teeth, there. (You know, that part of herself she's seriously trying to leave behind.) She knows only too well she hasn't yet quite gotten over that unhealthy relationship she had with pre-Mask Kaoru.
However what she tells Mio there is the truth and nothing but the truth as far as she knows it; these days Kaoru is adamant about dropping that weird cat-and-mouse thing they had going like the bad habit it was and keeps solemnly telling her to move on and be happy with Mio instead.