Vintage My Little Pony 1992 Sweet Kisses Pony Ruby Lips

This is a vintage My Little Pony Sweet Kisses Pony Ruby Lips. Her hair and tinsel are beautiful and her eyes are very nice. However she does have what appears to be either makeup or marker on her I actually purchased her this way thinking I could get it off. I tried magic eraser and soap and water and it has not come off. I'm just looking to get what I paid for her back. She would make either a great custom Pony or if you think you could get it off using something else you could try that too. I did my best to show the flaws in the photos so please look at all the pictures. Thank you!!