Here is an article on the charges and filings:
https://www.thenewstribune.com/news/local/crime/article246005675.html
“An autopsy found she had been stabbed and suffered skull fractures.“
...
Investigators say they discovered Dudley bought 50-gallon trash bags at a store the morning Cantrell went missing. They also found a text message he sent her that morning.
On the day Cantrell disappeared, Dudley turned his phone off and on and at one point dismantled the security cameras at his house, records say.
ETA: Also notable:
Cantrell found out she was pregnant July 16 and identified Dudley as the father to her obstetrician.
The doctor noted, “This pregnancy was not planned. Patient is feeling overwhelmed. FOB (father of baby) supportive of pregnancy, but not planning to be involved with raising child. He and mom are on good terms,” records say.