Yes, and it's making her look manipulative actually no matter how much the makers try to whitewash her actions and paint her a bechaari.
As you said, it's making her look two-faced cuz she's trying to give the impression to Adi and the family that she is being the bigger person and "forgiving" Adi's mistakes but internally nothing is resolved and she's not even trying to resolve it in good faith.....aise underhanded taunts about "main khud dawaai le lungi" and all ka kya matlab hai if you truly came back to try and solve the problems in your relationship?
Simply showing her token regrets about "Oh why did I check Adi's phone, I should have trusted him" are not enough.....the bechaari bahu act may work with the Tripathis who are dumb enough as it is....lol but it's not going to work on us as the audience.
As you said, this isn't a new Malini coming out...this was all always under the surface...it's now been triggered to become more obvious cuz Adi isn't giving her the usual level of coddling assurances that she had become used to bring him to heel in many ways.
Ultimately they will never make her the typical negative/grey character....but all these weird twisted things they are currently showing with her are just as tiresome in a different way....lol matlab insaan waise achha ho sakta hai but insecurity mein kitni twisted cheezein bhi kar sakta hai to try and hold on to someone.
I really do not know what they are planning to do with her but, she is just coming out as manipulative, calculative person in regards to her relationship with Aditya. That is her center and as she is seeing that its getting threatened, she has no qualms of using anybody or hurting anybody to make it right be it the T's or the C's. Its very underhanded and may be she is not realizing that she is doing it in her quest to have Aditya to herself but its definitely happening. In all other senses, she is nice but not when its came to her this one relationship and may be that's a grey shade. I was actually surprised that she was ready to question and hear Aditya's answer about the dooriyan because she generally prefers to run away as she continued to do after they came back home, no communication, no questions nothing.
As you said, it really is tiresome and compared to her approach, Imlie's is so refreshing. She was confused to when Aditya landed in PD, but her question were so direct like "why are you here", "what is your sachai", "what are you trying to do" and though little later, but her questions did force him to answer and give clarity to both of them about his own stand where their relationship is concerned. This makes a relationship more open and interesting because there is no hidden agenda , only honesty from both sides. 😊
One relationship full of lies, the other full of truths😛...