Khloe Kardashian is threatening to sue Kimberly Alexander - the woman who doctored a direct message she claimed was from the reality star about Tristan Thompson's alleged love child, TMZ reported on Wednesday.The 36-year-old's lawyer, Lynda Goldman, sent acease-and-desist letter this week to Alexander who has been repeatedly saying that Tristan Thompson is the father of her son.Kimberly (who also goes by Kim Cakery) admitted in a post to her Instagram Story that she faked the direct message allegedly from Khloe, but then doubled down on her accusations against Tristan.