Mother in law doesn't look too happy when I buy my unborn baby things.?

I do not understand why she said she likes to use your credit card better? What does that even mean? Why is she using YOUR money to buy herself shoes.. I am completely confused about that. I have no idea what the other answer meant when they said they are just frustrated.. frustrated about what? Just becasue they were quiet when you bought stuff does not mean much, but I do think its rude for them to act like its wrong for you to buy stuff.. it seems like maybe they dont want you and your husband living there with a baby considering they outright said the babies stuff was cluttering their home.. why are you and your husband living with his mom and dad when you are having a baby? they clearly are not happy about it...