Smoothies go straight through your system. We don't get the same level of satiety from liquids that we do from solid food. Plus your body really needs to digest the foods we consume.
A tip my doctor told me. You need to reduce you calories by about 200. Then after a few weeks, reduce it 200 more, etc. So on and so on. He also said, number 1 thing is you are going to be hungry, number two, yes you are going to be hungry a lot those first few weeks or month. Eventually your body will get used to it.
Yes menopause makes it almost impossible to lose weight. Cut out all sugars, dairy, grains and even my favorite beans/legumes.
She has to want to lose it bad enough to do what it's going to take. Can only imagine how the black bean/spinach/tahini one tasted.