Update: My wife [28F] found out that my mother [59F] and I [28M] have been lying to her about our (me and my wife's) baby [0M] for months

Original: https://www.reddit.com/r/relationshi...her_59f_and_i/
Don't think anyone would particularly care about an update but I all appreciated the insight anyways. So here's an update:
After I wrote the original post, my mom took my son to stay overnight with my wife's sister so that the two of us could have the house to ourselves.
We pretty much just talked for an hour while constantly reaffirming that we love each other a lot and want to sort this out. I apologized and explained why I did what I did. She said that feeling like she was there for our son's milestones was really just a band-aid solution that didn't actually convince her she was present. She said that if she actually had been using the milestones to feel like she was present, this would probably have felt worse for her. But since she wasn't, in her words, "deluding herself into thinking she's actually home", her main issue was that I lied which hurt her feelings. I apologized and explained that I honestly thought that she would prefer the lying if given the choice. She said she understood where I was coming from and that she felt betrayed when she realized, but she sees that I was doing it because I love her and she thinks we'll probably laugh about it with our grandkids one day (yes, I am very aware I don't deserve my wife).
Some things came out on my end that I wasn't going to tell her and didn't mention in my last post- namely, that I'm scared she's going to become suicidal. My uncle committed suicide when I was a child, in part from working in a high-stress job where he made a huge and costly mistake. One of my wife's colleagues attempted suicide while she was on mat leave. Being a working mom is bad enough, being a resident in this program is bad enough, both combined are a recipe for trouble. Since our son was born and the incident with her colleague happened, I've been afraid that if her home life wasn't perfect, it would push her over the edge. Anyways, she reassured me that that's not happening and I think saying it out loud also made me realize it's a pretty irrational, groundless fear.
We ordered takeout and sat together watching the real videos I have of all our son's firsts. I also have a special folder of pictures/videos of my son with my wife, so we went through that after. She almost choked from laughing so hard when I tentatively revealed the beanbag trick. I am the laughing stock of her friend-group chat. So I guess we're already at the stage where we're laughing about it.
Thank you to those who responded to the last post! The stereotype of someone in r/relationships advocating divorce every time anything happens is true.
tl;dr: marriage is work. I am stupid. We moved past it.


Source.