@esw21 I completely agree that it's important for us to stick together and for you to feel empowered as a woman and I apologise if I come across as judgmental it's really not that at all. I've only taken the information you provided in your op and tried to give an opinion on that. Like you said I haven't read the rest of your post. You said that you had struggled mentally in your pregnancy which is a big thing to recognise and I'm not in any way shape or form being judgemental.
I tried to give you a balanced opinion considering your mil's motives and why she may be behaving this way, whether she may be trying to support you ( I feel for mils as they can't get it 100% perfect all of the time, she may just be trying to help ). I'm not saying definitely but maybe.
I did say that it was irrational to be losing sleep about. Not because I'm judging you but because it's a bloody machine. You are having a hard enough time and I thought pointing that out might be a pick your battles type scenario where you might realise it wasn't worth losing sleep over.
I gave information about the machine both logical questions and first hand experiences that I thought might help you make an informed choice as a Mum as to whether you thought this might make life easier for you or whether it was worth the worry.
I mentioned all of the above and put it from the devils advocate point of view to maybe consider your mil may be trying to support you and as someone else up thread said if she bought you one at her house it wouldn't be the end of the world it's not like she is insisting you must use it.
I don't know how you plan to feed your baby and have no judgement either way. I couldn't care if you use the machine or not or make any other choice with your baby, that's your business not mine. But somebody trying to give you a gift isn't a normal thing to lose sleep over and doesn't (necessarily) mean they are trying to take control away from you and your child.
For what it's worth I gave the points I did as clearly as I did because you highlighted you were struggling mentally in your op. I have worked in the past in a secure postnatal mental health unit where women had ended up with postpartum psychosis. I'm not for one second insinuating that you have that at all or making any judgement, it just makes me aware of those issues in pregnancy and the need for support and making sure things don't spiral.
I might not be jumping up shouting what you want me to hear but it doesn't mean I'm not trying to offer you practical support op 