"What...You dare to imply that my children are not Baratheon enough...?
What are you saying you missbegoten girl, you ugly jealous little cow, have you lost your mind to imply something like this..? You jealous creature dare to imply that my children are not of... "

The screaming of the Queen sounded extremly loud to Shireen but the murmurings of all the other attendees of the Royal Court still managed to dampen the shrillness of the Queens voice at least a bit.

"BE QUIET WIFE" roared the now standing King from his place on the Throne.

Shireen forced herself to stand still and to open her eyes wide, as wide as she could.
Look confused, her inner self said and she forced herself to turn around on her feet as if she wasn't even aware of what she said. She looked with wide eyes first to her rigidly standing father and then to her wobbly mother. Then she glanced around, the Hands face was chalkwhite and most of the Courtiers looked from her, to the Queen, to the quickly Thronestairs downcoming King and back to Shireen.

The struggling Queen was held back by her brother, Ser Jamie of the Kingsguard. Cersei Lannisters eyes were hate-filled, her hands were formed like claws and strechted into Shireens direction. She still screeched, called her ugly and hateful and evil little jealous cow.

Joffrey stood slack-jawed near his mother, shock and confusion clearly to see.

Ser Barristan, who was standing near Shireen, looked down to her, whitefaced and resigned at the same time.

Finally her Uncle was down from the Throne and arrived in front of her.

He looked annoyed to the side and at his still screaming Queen.

"KINGSLAYER, SHUT YOUR SISTER UP."

He then turned back to his niece. King Roberts hands grabbed Shireen and hoisted her up, so that she dangeld in the air. Her face was now at the same height as his was. Behind her, she heard the protest of her father. Shireen turned not around though, instead she forced herself to stay wide-eyed while she looked back into the King's eyes.

"I am sorry your Grace, i meant nothing bad by it. I am ..gulp...i am not sure what i said that was so bad though. I would like to look like your children of course, or to become such a pretty Woman as the Queen of course but they are purely Lannister. All golden haired and emerald eyes, everyone of them. And all so pretty too.

I have mothers ears and fathers jaw and the only good things about me are the Baratheon-blue eyes and the hair color that you and father and Uncle Renly share with me. Oh and with Uncle Renly's ward too. Cousin Edric. I met him last year in Storm's End and he told me that he is your Bastard.

Father says it is not good to make Bastards and Mother was against it that i played with Cousin Edric, though he was nice to me and was not afraid even though i had my Greyscale scars back then. I would have enjoyed playing with him and he looked so much like you, well his ears were more like mine though...

Uncle, i mean Your Grace, did i say something bad again? You are looking so angry at me...Uncle, i mean Your Grace, your hands are holding me too tight, it hurts me...whimpering sound..."

Inwardly Shireen felt triumphant. Uncle Roberts eyes had grown large during her rambling and his mouth had thined to a angry line. After she whimpered though, he put her into her father's arms who immediately clutched her tight to his shoulder. Her mother touched her cheek gently while Shireen forced herself to look confused and frightened at the same time.

All eyes in the Hall were turned towards the King who was snarling red-faced into the direction of his wife.

Lord Arryn stepped to the Kings side and he looked still shocked and white of face.

"DID YOU HEAR WHAT MY NIECE JUST SAID WIFE? WHY DO YOU CALL HER A LIAR FOR JUST STATING A FACT?"

Well, Shireen thought, Uncle Roberts shouting voice could certainly be heard even outside of the Red Keep. She squirmed slightly in her father arms and wiggled so much that she managed to escape his grip. Before he could take hold of her again though, she managed to run the few steps to her fat Uncle. She grabbed his shirt and clutched his left hand with her own as if she was deeply afraid and intimidated by everyone around her.

" Your Grace, i am sorry that i made you angry. I really didn't mean to do so. Surely it is not Joffrey's fault that he looks so much like his Uncle as if Ser Jamie was his father himself."

Uncle Roberts eyes grew even more angry at her words and the murmuring in the Hall turned into speculating words.

Ser Jamie looked shocked for just a moment and then his right hand let go of his sister and fingered his sword instead.

Queen Cersei's screaming and screeching for her to shut up was now accompanied by Joffreys angry shouts that Shireen should take back her lies and shut her ugly mouth.

Uncle Robert roared
"SILENCE DAMMIT"

The Lord Hand and father himself stepped to Uncle Roberts side. Father opened her clutching hands and the King patted her head. Then he stormed forward and stopped in front of his still angrily screaming wife and slapped her so hard that she fell down to the floor.

"I SAID SILENCE, DAMN WOMAN"

It seemed to Shireen that Uncle Robert was right now just not able to not shout the whole time. She forced herself to look more frightend and confused while she clutched her father's hand with both of her own.

Then she tilted her head upwards and looked from her father to her Uncle and then to the Lord Hand. Her eyes grew wet and her lips wobbled when she opened them.

"Was it that bad what i said?"

...

Shireen is laying it thick here and a will do so too in the future but I want to remind all readers why she behaves as such.

Shireen is a fourteen year old girl that died at first through an ice sword after living for years at the Wall, then wakes up in her seven year old body with all her memories of her first life intact. Then the seven year old body catches fire and she dies again only to wake up in a seven year old body again and healed from all Greyscale scars and still with all the memories of her first life plus with a bit of cynical view on all that happens around her.

The fact of her being healed from the Greyscale scars, dying for it to happen and the fact of her then resurrection AT her SEVENTH nameday leads to all Sevener believers now thinking of her as tested by the gods and then blessed by them.

Shireen is just now testing how far she can go. And she wants stuff to be done as soon as possible. There is still the danger of the long Night lurking behind the Wall.

Cersei had in Canon way more survival instinct at that time and she had also a way better grip on the situation during that time in Canon and before, that is true.

But then she also wasn't confronted in Canon like that by a small child, blessed by gods as it was said even at Court, who is just innocently stating facts. She was totally surprised by that and lost her composure because this little girl just wouldn't stop talking.