Why does she do this ¿ ?

Last time i got paid and my neighbour took me and my mom for grocery shopping in her car. Anyhoo , well i dont really have clothes im kinda poor :'( . So i bought myself some clothes and she looked at me in a weird way. Anyway we went again today and i just looked at what they had and she said you know you should go to this store its cheaper and you'll find the same things of this store. And even anything i buy she says you can get this for cheaper some where else. I've noticed her kids are also like this.
10 mo
And to add she's rich they have the best things that obviously cost a fortune.
Why does she do this ¿ ?
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