How can I put up with my overbearing mother in law during pregnancy?

I am 13 weeks pregnant with our first child and the first grand child on both sides. My mother in law is driving me insane! she is so bossy and opinionated! She keeps telling us what we should and shouldn't do during pregnancy and when the child is born, she tells us what kind of name our child will have to have she said "it can't be too long because it wont go with the surname, you need a short one syllable name. You can't call it something different because they will have trouble through their whole life" she keeps referring to our unborn child as 'her grandchild' saying things like "my grandchild wont be doing .... blah blah" She tells me what furniture I will need to buy and said "you wont need a basinet as they are too expensive and you don't use it for very long...". I am getting so annoyed as she doesn't ask what we want for our child but just bosses us on what we need and what to do! It is so patronizing and rude! I wish she could give us SOME credit as parents to be as I do have a degree in Early childhood and work with babies and children so I'm not completely clueless! She never talks about the fun we will have with our child, she just goes on all the time about how she is going to babysit and take it for walks with her friends etc. as though it's her child more than ours!!! I'm so worried about how she is going to be as we get further into the pregnancy, and when our baby is born! Any advice to save my sanity?