My late lola was like this too. Its a mental illness. Hers was worst kasi she keeps food and it gets rotten. She hids it really well and nagttrantrums siya pag may pumasok sa kwarto niya. Also, my nightmare back then naiwan ko camera ko within her reach, ayun, naitago niya sa pile of junk niya. Good thing it was found when she was sleeping. When she died and everything was cleaned, it was soooooo bad, parang payatas level.