Pushy demanding grandma

How do I tell my boyfriends grandma to leave us alone? She is always telling me I need to do this and that and gets mad when I don't do it her exact way. She demands us to jump for her and especially my boyfriend. He is her favorite and out of all the people she could ask she demands it from him. I don't have a job now but in the process of going to interviews and she thinks that just because I don't have a job I need to be doing everything and anything for her and my boyfriend. This women loves her rocks that her entire property is just rocks and she pretty much forces us to go and get her more and more but boyfriend just can't tell her no sometimes, it's cutting into our alone time.