First of all...we can never be sure what the reality was. So my take on this point is that:
-Pratap had 11 wives. His father Udai Singh had 20. Most of these marriages were political alliances to ensure that the fathers of their wives never attacked their land and other political reasons.
-Ajabdeh was Pratap's first, favourite,beloved wife. Pratap literally loved her...and the most. PrAja were really very close, closest infact. No Phool or Rattan or any1 could be Pratap's favourite or loved wife. He loved Ajabdeh to the core always.Even after her death. So Ajabdeh was his Maharani, and always remained his Maharahi. No one could take her place in his heart, his life, and his Mewar rajputana. So nobody was made the new Maharani after Ajabdeh's death.
-Pratap married Ajabdeh's sister Rattan only to fulfill Ajabdeh's last wish. No love their. And for his marriage to Phool, i consider it a political alliance bcoz when he married Phool, the Mughal forces were at the peak of their power. So he married Phoolkanwar to unite the 2 strongest kingdoms of rajputana-Mewar and Marwar.
-Ajabdeh and Phool were really close friends. And so were Pratap and Ajabdeh,alongside being husband-wife. Phool had this self-obsession attitude,but she wasn't bad.She was a chanchal-natkhat kid.She also has some good qualities which our lovely Ajab lacks(no one is perfect!). Pratap married Phool for political reasons(as mentioned above) when Ajabdeh was still alive.But Phool was very close to Ajab, and so was Pratap, so after Ajab's death, Pratap must be very shattered and Phool must have reformed into a more mature person,thus supporting Pratap in this time of his sadness. But Pratap always loved only Ajabdeh, so although Phool supported him,she never became his maharani. Pratap only loved once,and he could not replace Ajab's place with anyone,however close she maybe.
-Phool is not being sent to Marwar and PraPhool is being shown to make the basis of Pratap's life after Ajab's death,coz Phool married Pratap at some point and matured by Ajab's death and started supporting Pratap a lot. But Phool never became the maharani,it was only Ajabdeh, she was Pratap's love, one more reason may be that, Pratap was strongly devoted to his motherland, so he never indulged in falling in love again after Ajabdeh's death, he spent most of his time protecting his motherland.
And this line by Hiral sums the above two points correctly: so after Ajab's death...Pratap may just die a bit from within as far as personal feelings are concerned...and he got devoted more to the protection of his motherland.
-It is usually the eldest son who ascends the throne,but the king can also prefer a more worthy heir out of his sons(like Udai Singh prefered Jagmal to ascend the throne-but Jagmal wasn't a worthy heir, it was only out of love or favour that Udai Singh chose Jagmal over Pratap, but Pratap ascended the throne still)
-I really don't think that Phool will be converted into DB, coz DB is bad,she kept Udai Singh from indulging in his other wives and their sons.She was a hypochrist.Phool is naughty and self-obsessed and confident,but not bad.The self-obsession comes from being pampered so much i believe.But she never showed a sign of jealousy when Pratap pointed that the thaal belonged to Ajabdeh and not to her. She was very happy for the jai-jaikar Ajabdeh was getting becoz of Pratap,she was very happy for Ajabdeh. Not jealous at all. As for her behaviour with Udai Singh,she had to get out of the situation somehow, and she was not directly insulting him. And moreover, if the king is not feeling insulted,why should we bother? Everyone has their POV,but in the end,the king finds it innocence and not insult, so lets be fine with it.
-Amar Singh was Pratap's first and eldest son and he was from Ajabdeh. Eldest son usually ascends the throne, but the fact that Amar Singh was given birth by his beloved Ajabdeh, Pratap was attached to Amar Singh even more. So after Ajabdeh's death, Amar became the heir, and Pratap spent quite a lot of time in training Amar to fight for his motherland.
Thats what i have got to say...i hope this was helpful :)
Kyunki Saas Bhi Kabhi Bahu Thi 2
Iss Pyaar Ko Kya Naam Doon
