MIRACLE DOCTOR, WILD EMPRESS: GENIUS SUMMONER

Author: MS Lotus

She crosses over to a different world, and becomes a little six year old good-for-nothing. One day she rises up, with her summoning skills which defy the laws of nature and forbidden magic. Her abilities suddenly astound the world and she disdainfully looks down upon the strong from the mere corner of her eyes.
When extreme frivolousness meets up with two-facedness, when a genius squabbles with an evildoer, at that moment, the world trembles because of it! (From NovelUpdates)