I think she wants a change in raman behavior which is particularly his impulsiveness which is main cause of her suffering
As in tension n panic n other critical situations raman indeed start questioning her motherhood which actually can hurt even biological mother and here ishita has being special case this thing hit her emotions in ultra delicate manner, which she till now bear and always forget n forgive after raman genuine explanation or just like that some time.
But once she said during one of their "non taking term" time- aap mardo ko cheezein yad nahi rahti but Hamein sab yaad rahta hai(the hurtful words) and fir wo Chubhta hai"(sumthing like that) and recently she said bahut gahra ghaaw hai itnia asani se nahi bharega.
So it must be so painful for her to bear the wrath even it is for some time and even she forget and move on but the nature of raman is like that this thing is natural to come in between them and she doesn't want to go through pain anymore so she takes a stand and regarding kids taking away( I had skipped those episodes and watched 4-5 days ago so now my opinion changed) I was against why raman can't meet kids but ishita ka main agenda was to keep away kid from him , her dialogue specifically imply that she didn't want ruhi pihu to be in vicinity of raman and witness raman impulsive nature and learn or affected in bad way, so her decision was already that but then cv made soften ishita and she was surprised that Mani don't want to let kid meet raman which was basically ishita idea from the moment she left bhalla house with kid(Sorry this is off topic )
So now coming to what she now wants
She is seeing no effort from raman side though he made effort in reaching out to ishita and pihu but again he didn't show any inclination toward his change in behavior I mean he didn't mention this particular sentence that he will now onwards won't do such thing and she won't be put in blame game by him .
Of course raman is doing level best for understanding ishita pain and protecting his family from nidhi he goes to such extent to be a nanny and be in disguise but this all efforts are not directly shown to ishita so she is under the impression that raman is Now not interested in making any effort though it's only 1 days laps as raman called her on v day but then her fragile heart is now become weak and wants all things love pampering stalking even may be so that she can feel she is loved by him , though she knows he loves him but today I had a different view regarding this i think ishita thinks that as she is pushing raman away from him so it may possible he indeed go away and not come to her as she is now standing up for her self and now not behaving like a mahaan lady (in terms of their relationship as she is continue to be a mahaan lady for shagun) so might be ramam can't tolerate her demand of changing him and finally raman would give up this may be ishita fear as I felt after today episodes coz then why she will doubt his character as he is definitely not such kind if person.
But all this shagun advice,mani lecture and now Toshiji doubt all these things messed up her mind n she behaves out of the way sometime.
And in this process she will succeed or not only cv can say.
Ps- sorry for long ranting as I m now sleepy and don't know all this make any sense or not
And though I was angry on ishita till now but I think it is cruel of me to think like that for her as she really loves raman but the pain sometimes overshadowed the love so let her also behave like normal lady and pagal madrsaan ( like Raman says) who can take the liberty of behaving weird n normal and all that she wants.
But yes in all this they are missing their moments of life and they should be together asap 8 years is enough of suffering of separation. 😡