Not to sound too morbid but the people that did a burglary like this would have been watching the home for a long time (as in, potentially weeks) to suss things out. If she still had the 24-hr security they would've watched to check exactly where the security guard patrols, if they take breaks, what time shifts change over, etc. Big celebrities still get burgled because even expensive security isn't perfect - e.g. Simon Cowell got burgled while his security guard was on the toilet. All it takes is a few minutes and they can get in and out.I thought Molly said in a previous vlog that she was paying for extra security as people were turning up at the flat or was the extra security only when she was at home?
If they have any sense they will keep their next house completely private.