You were Aemma and Viserys second daughter, you would have been twin to Baelon if he had lived, due to both Aemma and Baelon dying... it later led to Viserys resenting you, after all he wanted a son, not another daughter. He didn't really let you anywhere near the family except Rhaenyra for obvious reasons.

You had constantly been found in the nursery with all of Alicent's children at one point in time, always cradling them and rocking them to sleep when they started crying and they all adored you.

Alicent liked you far more than she liked Rhaenyra most of the time, she cared about you in more ways due to the fact you had only been 2 years old... and you weren't Rhaenyra, as in your weren't the named heir... and Viserys resented you.

Viserys, however, kept trying to separate you from the children, every time he found you with them he would tell you off and you would end up crying in more cases then one... before you finally just stopped.

Anytime you were seen with them, Viserys would pull you aside until you cried about how the likes of you shouldn't be near your precious siblings. You isolated yourself more times than not... what else could you do?

One time after talking to Aegon about your dragon's, Sunfyre and your own. Viserys heard about it and requested to talk to you alone, he started berating you and Aegon followed... hearing it all.

"I told you to stay away from them!" Viserys hissed, grabbing your arm roughly. "And what do you do? Disobey me... again!"

Aegon stood, listening to all of this... so this explained your hesitant behavior... the way he never seemed to spend time with them... hiding yourself but you also never deliberately ignored them. If they talked to you, you would talk but never would you talk first.