A Utah mother accused of fatally poisoning her husband before penning a childrens book on grief is now accused of witness tampering after a handwritten letter addressed to her mother was found in her jail cell, according to state prosecutors.

The six-page letter allegedly written by Kouri Richins lays out a plan to have her brother falsely claim that her late husband, Eric Richins, was a regular drug user who obtained the fentanyl that killed him while in Mexico, according to a copy of the letter filed in a Summit County court and obtained by CNN and Fox News.

The connection has to be made with Mexico and drugs. Upon information and belief LOL, says the letter addressed to Richins mother, Lisa Darden.