Saying no to “gifts”

My mother has accumulated a whole bunch of second hand baby/toddler toys and other items recently (at no cost to her, it was from a neighbourhood curb side clean out collection). I have only seen the pile briefly but most of it looked well-used and included a lot of stuff the kid won’t use until 12-24 months plus (including a scooter!).

At the start of my pregnancy I sent her a message politely asking her to not buy anything for our baby because we don’t want to be overloaded. We have very little storage at our house as is. When she showed me all of this stuff a week ago I told her we don’t have room for it. She just messaged me asking when I would be picking it all up because it was overcrowding her house and I again said that I appreciate the thought but that we don’t have room for it, especially as most of it cannot be used for at least a year from now or longer. Her response was for me to “stick it” and that she’s sick of my attitude and that she doesn’t deserve this 🙄.

I do appreciate the gesture but at the same time it really bothers me. I know she’s just trying to be kind and contribute but I just don’t want it. Am I being completely unreasonable?

Update: I didn’t reply to her message so she sent me another one calling me a bitch. 🤦🏼‍♀️ This is just one of many she’s turned verbally abusive towards me during pregnancy for not agreeing with her on things... how long do I put up with it?