Hello
Come out of the game. Then go back in again, and see if that helps the issue.
Try repairing the game. To do that, right click on the sims 4 picture in Origin and click repair.
Try resetting your sims 4 folder and see if that helps. To do that, move your sims 4 folder ( that is in Documents -Electronic Arts - then the sims 4 folder is there ) to the desktop. Then start the game, and a new sims 4 folder will be generated. Exit the game and then add back the "options.ini" file and the "saves" , "screenshots" "tray" "custom music " and "mods" folders from the desktop sims 4 folder to the new sims 4 folder, replacing the new generated file/ folders with the old file/folders.
Save your sim to your library. Then start a new save game file, place her in it and test to see if the same issues occur.