Small Celebration Dinner

I got married in 2020 with a very small ceremony that was just my husband & I and a photographer (it was the height of Covid). We had postponed our original wedding a few times then got pregnant and decided to just get hitched and celebrate later. We had originally planned to do the celebration on a small boat with ~60 guests but the boat plans kept getting postponed and we finally re-scheduled for June 2022 but the boat company fell through and we ended up having to cancel those plans. My dad was just diagnosed with cancer and is going through chemotherapy so we decided to just do a small dinner with immediate family outdoors at my grandma’s house. We only invited my immediate family + my grandma & my husbands grandma. I hadn’t told any of my aunts or uncles about the small dinner celebration since I wasn't inviting them but someone told my aunt and she’s now mad she wasn’t invited. Out of all the aunts/uncles she is the one I am the least close to so I was kind of confused by her being so angry about it. I had planned to invite her to the larger boat wedding but with everything going on with my dad and the fact we’re working on year 2 of marriage already I decided to keep it very small. Am I in the wrong here? Of course I wanted to celebrate with my entire family but priorities changed and now that big wedding celebration doesn’t seem important. With my dad being immunocompromised I didn’t even feel comfortable going to a restaurant anymore, which is why we’ve ended up in my grandmas backyard. Truthfully I don’t even feel like celebrating anymore, with my dad going through chemo, it just doesn’t feel like a happy time. I really don’t want to deal with my aunt feeling slighted for not getting invited!