Ok so I have a problem

I have a wild hedgehog and a stray cat , that i feed in the back garden , both come at night eat . But the fucking hedgehog keeps eating the cats food too even if I place them seperate she finds them 😂 And now shes rather rotund . Literally doesnt need to roll up to be a ball Like how do I solve this lmao I tried putting the cats biscuits on a table but it knocked them off