Your niece selected Full Tag Text.
To change it, go to View ribbon > Options section and then select the icon Partial Tag Text.
PS.: You don’t need your niece to revert the settings, you can do it yourself. 😃
@NeoAtlas, thank you very much!!!
this was driving me crazy, I was actually thinking on handing her year and half fingers the keyboard to trash it, and maybe, see if it reverted back!
This quick "fix" worked perfectly!
[Edited at 2019-06-11 01:57 GMT]