I need suggestions on how to "straighten" my 5 year old out. She's to the point where she will make…

I need suggestions on how to "straighten" my 5 year old out. She's to the point where she will make up lies about me n her father where we could seriously get in trouble.. Like never feeding her and beating her till she's got cuts and such. We have tried everything under the sun even being super nice and only doing short term time outs to all day punishments and she gets stuff taken away. I am seriously at my Whits end and don't know what to do anymore 😭😭😭