Julie not sharing her ability to timetravel is driving me insane

I get that she initially wanted to use it to save her dad, but after it doesnt work the second time she just decides to sulk and not share with anyone that she can TIMETRAVEL!!!!

“Hey guys i think you should know I can literally travel through time. Yeah i go to these ruins and seez out and go back in time. I thought i should share that so we can you know maybe use it to our advantage. Maybe someone else can try or maybe you guys can give me a spare talisman or something.”

They are pretty much in literal hell and she doesnt think its worth sharing because she didnt get what she was hoping for after a whopping two attempts