I have to miss a wedding because it's three days before my due date. :( And it's going to put my mom in an awkward position.

My baby cousin is finally getting married to her long-term partner, and I was SO excited to go to her wedding. I thought they were going to have it earlier this summer, but I just got the save-the-date in the mail and it's three days before my due date. I haven't announced my pregnancy yet, but thankfully the RSVP/invite won't come until well after that has happened, so we can send her a fat check and our condolences for not being able to go.

I'm so sad though. Her wedding is going to be at one of my top three FAVORITE areas in New York. We could've enjoyed an absolute banger of a wedding with all of my family. I could have detoured down the Thruway on the way home to visit the Hudson Valley and visited my favorite restaurants, friends, and hiking spots with my spouse. It would've been an amazing time all around and I'll be spending it at home.

The other issue is my mom. My cousins are her bonus kids to her, and I know she's so excited about the wedding. I don't want her to have to choose between me and my cousin's wedding, and I'd really prefer that she plan to go to the wedding over hanging around here in case my baby does choose to come on time. How can I handle this convo with her? I know she's an adult and she can choose to do what she wants. But I don't plan on having anyone but my husband at the hospital with me during my labor and likely for some time after the baby gets here. If the baby does decide to come on the day of the wedding, she can always drive to the hospital on her way home to meet her grandchild the next day. Or just wait until I'm discharged and melted into my couch a couple days later.

Advice?

Edit: My mom will 100% respect my birth plan, I'm moreso just wanting to convince her to feel comfortable going to the wedding. I don't want her to feel nervous or anxious about being far away if an emergency happens, or feeling like she can't fully enjoy herself because I might be in labor.