Your grandduughter does NOT have psychological problems. It is perfectly
natural for children to be interested in household articles and to prefer
to play with kitchen things. Since (by your report) she is fond of the
grandmother, it is likely that she wants to be around using the same things.
Get her a miniature set of pots and pans -- that might work. Let her help in
little ways, when her mother is cooking.Playing with Atta or sorting out
vegetables etc can be fun for a two year old.