Well, we don't know at this time how many things she has said or did that are not accurate.
There's a sworn document of her stating she saw her daughter "getting dressed for school" at 08:00am. It clearly wasn't a slip of the tongue to say she was getting dressed for school around 08:00. I could see the possibility of a LE officer writing the wrong time and it wasn't noticed when she swore on her statement, but how does one explain "getting dressed for school" around 08:00. It's too specific to be a mistake.
Saying "we" instead of "I" or "He" is not normal imo when every detail matters and you're seeking support to help find your missing child. With her excellent communication skills as seen during her interviews, she would be aware of this. Not only that, she described the details of her being dropped off and walking toward school as having actually seen her daughter do that. Again, her excellent communication skills would have informed her to say, "My partner told me that he dropped her off at 08:40 and saw her walk toward the school ...". Someone with excellent communication skills knows intrinsically which words to use, and when.
There's many other discrepancies as well. It's the totality of her performance that makes people suspect her motives and that are hard to explain away as this or that.
MOO.