In her police interview, the boys came up and they were still at pre-school. She mentioned being worried for their safety (because, who did this to Danny? She actually says they must hate his children, too. It's an odd thing to say when at that point it is completely unknown who did it) and the detective reassures her they are safe at school and police are there. As the interview is running with no definite end, she also has to arrange for someone to pick them up, all of which is arranged while she is at the station. She will also end up going to stay with the same people at least overnight as she does not want to be alone.
You just got into this case so give it time. This is of course all my opinion, based on deep diving and the expertise of others. Wendi is complicit. This was done with her knowledge, approval, if not actual instigation. She is an actress. She is also a high-functioning sociopath. She is described as very smart and because she is also a lawyer, she has done well to try and ensure that the dots and evidence do not concretely connect to her. This also includes digital trails and so forth. Her problems with Danny (and her not being able to move to south Florida with them) became her family's problem. It is said they (Adelsons) favourite thing was hate Danny and they were obsessed with that hatred. Both the initial attempt on Danny's life (June 2014) and the actual murder of Dan (July 18, 2014) coincided with Jeffrey Lacasse's (her then boyfriend) out of town trips. She was trying to at least throw suspicion on him. The first attempt was aborted for various reasons (hit men were substance abusing, Luis struggled with taking out a father of young kids, rental car company flagged their vehicle for being out of local area, i.e. they would have been clearly tracked/located and attached to the crime, had they done it then) and then they went back the second time. Lacasse knew at the beginning of that week that he and Wendi were done (watch/listen to his police interviews) after the yoga class and the parking lot parting, but he'd hoped that he'd see her one last time with the boys--that maybe she'd invite him to say good-bye--because he had grown very attached to them. It was over but weirdly she wanted to reaffirm his Friday departure plans as they were walking away from each other. But he left it open, not really confirming. He knew it was odd. Then she sent the "no contact for a week" email, meanwhile, she'd just been away for two weeks. He basically said to h3ll with it, there's no reason for him to delay his trip (he was hurt and sad but had already accepted it was over), so left on the Thursday night for Tennessee, not the Friday, late morning as originally planned.
I got into this case in the last few weeks, I didn't know anything about it and didn't realize how long it had been going on, and the various people implicated/arrested/convicted. I watched the Wendi interview and the Jeff Lacasse interviews: he's a good guy, articulate, caring and thoughtful. Totally lovestruck by her and even though he knew she was erratic and difficult in many ways, I get the sense that he thought he could bring some stability to her life, and that of the boys (on her side, anyway, as Danny was a devoted father when he had them). Jeff too was divorced and he mentions really wanting a family; he was attached to the boys and Wendi knew this (and also manipulated that attachment, he recognized later). I've watched various other interviews. (I do not have time to watch all of the trials/testimonies, but have watched some, as well as highlights.) I recommend The Wondery "Over My Dead Body" podcast (it's on YouTube) there's a 6-7 part deep dive, it's really good, even includes an interview with estranged son Rob Adelson and his wife; Gigi from "Pretty Lies & Alibis" (she is actually just summarizing a lot of the case now but does an excellent job; she is also posting jail house phone calls...frankly, I do not have THAT much time lol); "Dr. G Explains" psychologist and body language expert, and "Surviving the Survivor", Joel has some great interviews/guests, and even "The Behaviour Panel" (body language experts. I really like Chase Hughes and Greg Hartley).