Honestly doubt that its a complete lie, she is most likely exagerating it, yes, but defo not a total lie, i know more than a few people that sadly have to be on a wheelchair and most of them can partially use their legs for a bit, and she clearly can too, if she didnt she would not be able to pose etc.
She's been on live recently having a full on meltdown bc her wheelchair just broke bc it was a bad quality one and she got "scammed" by the person that sold it to her as a top tier one or whatever, and that she had to get one and they're quite pricey in spain if she wants one that isnt just gonna snap under her.
If she is lying doing all of this it is very wrong indeed but i doubt that all of this is a lie and i think that she has to use one for most of the day.