Job is getting out of hand !!!

I have been here for 4 years on and off , had a job else were for a year and came back . Was pregnant then went on mat leave then came back .. there is this one girl !! Who I work with and she is a bully I can’t stand her and I’ve been very down and take no s***!

My job here is to clean rooms of the residents / serve food / shower them / change them .but get no help at all since I’ve been back I get no help at all besides get told what to do by the new girl .who’s been here for 7 months when I ask for help she laughs or just ignores me like today I was going to go change a resident and she said she’s not going to get changed for you . It’s almost time to eat well guess what I changed her.

I’m fed up and it’s making me depressed .. I can’t even smile anymore i just feel miserable here . I have been looking at other jobs but I haven’t told my boss yet.