
i think it's bc it's not easy to leave the palace, especially since there's no-one on her side, also her father would properly hunt her down and make her stay before he finds out who exactly is the most powerful child from the prophecy. Likely many spies and eyes watching her, also hard to survive outside as a child, plus her features seem to be recognisable (mage guessed she was the princess), so if she escapes she would be easily caught back and then would be targeted and lose her disguise.

People now a day answer without thinking(〜 ̄△ ̄)〜 "you can run or hide without making a sound, you can disguise urself as anything u want" and also if she died through poison why not use one as a payback duh~ this is why I don't like readers who don't think positive and dream like a spoiled princess while reading. but knows how to comment with a nonsense words and make another nonsense. Remember there many possible ways to be not be killed or avoid her pretending self harm since its king and queen time with a magic twist(〜 ̄△ ̄)〜 reader should understand what they read before going to criticize someones comment that is why there's a word "rating" XD and also KAREN is named for those who discriminate others XD not for those who comment and rate honestly ~sigh~ P.S people who comment nonsense should read psychology instead manga or manhwa(づ ̄ ³ ̄)づ
I thought this manhwa is good but I guess not ╮( ̄▽ ̄)╭ like why not run away instead pretending to be a crazy b*tch. You have many options but instead you choose to be dumb ugh... Also pls don't use mental disability as a content nor a choice or material. You might give people an idea to be crazy and they might think that craziness as a simple thing(〜 ̄△ ̄)〜