She's not even a kid

She has a past life and knows this is a novel plus she has lived twice in this novel world yet she still acts like a child I really don't get her she's annoying. She does all these weird things and they just label them as strength and those hopeless MC's who have been abuse so much that even basic common decency looks like something worth obsessing over and every silly little thing she does is worth fawning over the only person who treats her accordingly is the mage well cz he knows she's actually an adult he even said in a murmur that she knows how to act like a child for real I get it acting like a grown person when you're 5 would be weird but still ow and this whole thing of FL's with memories of their past lives to not say anything not even to a person like her father she knows that man would believe her and because this involves the death of many wouldn't it be wiser if she told him she's not blocked by some system or divine interference that won't allow her to reveal the truth but now I've figured it out she's not saying anything for her own selfishness she's not satisfied with being the protagonist's daughter she wants to be the protagonist herself that is why a 5 year old now 7 would take it upon herself to act even though the simplest option would be telling her father who has the resources, power and authority to produce swift results it has nothing to do with being off script. I usually hate FL's and MC's who act like this and she's no exception