Looks sunburnt to me. no reason to be embarrassed you didn`t do anything to it you just want to help your plant
I totally understand that! I would go back to offering it the same TLC you were giving it before she put it outside and give it a chance to recuperate. It looks like it was really healthy before it happened so it should slowly get better. Leaves are probably done for though. Unless the roots are squishy or black i`d leave em