Here is a brief timeline from that link, straight from the horse's mouth:
Commonwealth's Attorney: "They Decided They Should Cut Nicole Lovell's Throat"
Thursday, February 4, 2016
This is the timeline according Commonwealth's Attorney, Mary Pettitt:
Natalie Keepers appeared in court on Thursday.
During the hearing, Commonwealth's attorney Mary Pettitt offered up a timeline of events.
1. Pettitt says Keepers and David Eisenhauer, the other suspect, began to have conversations planning murder in early January.
2. On January 26th, Keepers and Eisenhauer went to a cookout in Blackburg, drove by Lovell's house, went to Christiansburg to buy a shovel, and picked out a location to kill her, according to the Commonwealth's Attorney. Records show that Eisenhauer and Lovell were communicating on January 26th into the 27th.
3. On the 27th at 6:30 a.m., police received a 911 call saying Lovell's door was barricaded and her windows were open.
4. On the 30th, they obtained a search warrant for Eisenhauer's dorm room.
5. While searching his dorm, police found a text from Keepers saying, "POLICE." They began to question Keepers, who complied.
(Police found Keepers in her boyfriend's room on Jan. 30, at which time she texted the message "POLICE" to Eisenhauer. Different article updated February 5, 2016 -
http://www.virginiafirst.com/news/local-news/keepers-denied-bond-in-lovell-case)
7. Keepers told police that she and Eisenhauer drove down Craig Creek Road, where she helped Eisenhauer load the body into the back of his Lexus. Then, they drove to the Walmart in Wytheville to buy cleaning supplies and kept driving to North Carolina," according to Pettitt.
(She also told police where to find the body, Pettitt said in court today. ABC news article dated 2/4/16
http://abcnews.go.com/US/virginia-tech-student-excited-part-alleged-murder-fbi/story?id=36712925)
8. On January 30th, Nicole's body was found. On January 31st, Keepers signed a Miranda Waiver.
http://wset.com/news/local/suspect-in-13-year-olds-murder-in-court-today