My mother in law is a fat cow. ?

My Mother in law is so annoying she's such a nosy parker she wants to know every little thing that's happening in our life, she keeps asking my husband how much money he has and that he should save the money and not let me over spend I mean what's it to her how much I spend it's my money and I'm free to do what I like I recently bought my 5 month old baby a cot for $800 and she flipped out on me telling me I should have kept him in his basinette it's getting too much for me I feel like she's tearing us apart I'm the type of person who sees something I like I buy it lifes too short and were not starving to death I want a way to let her know she should mind her own bussiness.. Oh and my husband dosnt like to upset his mum he just tell her ok but tells me not to worry about it I want her out of my life.