Need some perspective on whether I was wrong, or if my nmom is overreacting

I need a little perspective to see if I'm in the wrong here or if my mom is overreacting. Also wondering if it would be better or worse if I cancel my plan with her that we have for tomorrow (Mother’s Day). I feel like I can’t cancel it bc it’d start a huge fight, but my husband thinks I should.

So… after 27 years of dealing with what I think is her narcissistic behavior, I feel like I can't trust my own feelings anymore. If you can see my post history she's said things like she hopes my future child treats me as horribly as I treat her, that she's going to be my child's best friend, stuff like that.

Aside from those comments my mom has been on great behavior for my entire pregnancy, literally since the day I told her about the baby (7 months ago) there hasn't been a single issue or fight. Leading up to that, we were on an 'information diet' and it upset her a lot which caused her to explode on me multiple times for being too stoic and surface-level. I think she's excited to be a grandma (this is my first baby) and she's been very supportive, asking how I'm doing, buying me things for myself and the baby, and even planning my baby shower.

She bought me a new crib a few months ago and it finally arrived a few weeks ago but it was the wrong size. When we picked it out and bought it, and when it was delivered the first time, I expressed my gratitude MANY times, like over 5 times, and I made a point to go way over the top so she couldn't accuse me of being ungrateful. I arranged the return/replacement, and she even went to the store to speed things along to make sure we have it before the baby arrives and I thanked her 3+ times for that. The replacement was delivered 2 days ago and I've been studying for a board exam which is in a few days- the test is on everything I've learned during college & grad school and I'm extremely stressed about it and I've been studying for months and nonstop the last few weeks. I planned to tell her about the crib and show her pictures on Mother's Day when I go to her house (an hour drive away) to bring her lunch. Which I'm also bitter about because it's really valuable time that I should be studying.

But anyway, she called me today and checked in, then called back a few mins later to ask if I received the crib yet. I said yes we did, we love it and it's the right size. She said she's so surprised I didn't call her to tell her we got it, asked if it's set up, asked where it is, etc. I repeated that yes we did receive it and it's set up and we love it, and she repeated that she's just shocked that I didn't call to tell her. I said I've been extremely busy and was going to tell her about it on Mother's Day when I visit. She was so, so upset and annoyed and said okay well that's it then, bye, and hung up.

So now I'm preoccupied with this when I should be studying, and I don't know if I should just forget it, or call her back and apologize for not calling the day we received it (which was 2 days ago).

My husband said don't spend 2 seconds worrying about it, she should know not to stress me out even more since the baby can feel my stress. I know he can because he doesn't kick as much when I'm stressed. Just wondering the best way to get over this? Just ignore it or apologize? I literally cringe when I think about apologizing because I don't think I did anything wrong, but that's why I need some perspective. Thank you.