the slayings.

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As for the motive, Thetga said she and the rest of the family  don't have one. 

8 A general view shows the Great Wolf Lodge in Scotrun, Pennsylvania, Monday. Mom Metallica Rose allegedly killed her son and husband at the lodge. Christopher Sadowski for NY Post

8 Metallica Rose Harrison with her son and husband, Charles. Metallica Rose allegedly murdered her son and husband at the Great Wolf Lodge in the Poconos. Metallicarose Harrison / Facebook

8 Metallica Rose Harrison with her son and husband Charles. Metallica is accused of murdering her son and husband while vacationing a the Great Wolf Lodge. Chaz Harrison / Facebook

8 Metallica Rose Harrison, center, poses with her stepmother, April Thetga, left. Facebook/April Thetga

 That's the thing. I don't have one. We're just as shocked as everybody else. … We want answers,  the stepmom said.

 They were always happy. This is devastating.