Aru's temperament is not rude unless she has a reason for it, or unless she needs to figure out something through her behaviour.Even if its not her imagination and she is rude in real, it will only make ehr reflect , ponder, and ask for forgiveness.
Aru's jealousy with Saanvi track is to show that now she is developing more feelings toward Mukhi other than respect and caring. Till now we saw the gentle friendship, building respect for Mukhi's mentality, his ethics, his stand on Man-woman equality. His grounded behavior, his caring for her..she is affected by all of it. But trust me, Aru is far far away from accepting Mukhi as her husband. I mean common, you cannot love every guy you respect.isn't it? There is much more involved in a relationship. So while basic respect and caring is established, they have to go a long way before accepting each other for ever.
Aru so far was a no -nonsense family and career oriented girl. She is an MBA but didn't have flings in college..she was too busy with jobs and career goals and family problems. Mukhi is first every "Man" to get close to her in that sense. They both are married but have given each other freedom to let go..so this is her first ever "relationship" if you will.She right now has a heavy duty " crush" on the only man that has come so close to her. And this is her journey from girl to woman...from crush to acceptance of Mukhi as her life long partner. This is just the beginning of that journey.
So she is going to see it all- Jealousy, possesiveness , attention seeking ( getting decked up for him to notice her), wanting to be special in his eyes, fear of being rejected, fear of not being right for him, fear that he may like someone else more than her and he is just tolerating her, wanting to do special things, expectations, wanting to know him fully, wanting to be part of everything he does, wanting to be over and above all his other relations, fearing heartbreak---the whole jing bang, the whole nine yards that comes with the FIRST EVER RELATIONSHIP of your life...the joy, the tears..everything.
They are husband and wife to the world..so it may seem why does she need to get jealous of Saanvi who is a good friend. But here is the catch--they have not accepted each other as spouses and this arrangement that they have is supposedly temporary. They really don't know where they stand with each other. She does not even know if he considers her a good friend...so far he has been dutiful and dignified as the man who has to share her room. So because now she has the first pangs of wanting to be special to Mukhi..Saanvi seems like a threat. This will pass once Aru Mukhi relation is solidified..but the route is pretty hard.
And its much more hard for Aru because its not as simple as saying "ya you know what he seems like a good man so I can accept him to be my husband.". He is 42 , 22 years her senior and a complete village guy...this issue is not going to make it any easy for her to accept her love.She may accept that she likes him..but that is far far away from wanting to spend all her life with him..and we are not even talking about her career ambitions at this point.
Put yourself in her shoes--don't see Eijaz , see Mukhi...and see how hard this journey is going to be for her.
Her issues with Saanvi and Mukhi friendship as very bang on in her path to realization of her love. Here is where she will start understanding that he means more to her than just respect for a guy.Saanvi rather with be a catalyst to Aru Mukhi love..she of all knows how happy Mukhi is with Aru.
I would sit back and happily enjoy Aru's journey...her first "crush " on her husband😆 ..remember she is 22..and the most mature of people don't use that maturity for themselves..she may have given very mature advice to others...its always easy to give gyan to others, hard to use it for self. She is falling hard for Mukhi..she is going to have to deal with all the pain and misery that comes with it.