Is this post rude?

So my mom post this on Facebook . And the thing is we have a good relationship. This whole time I haven’t done anything for her to be upset at me. This post upsets me because I feel that she’s comparing me and my sister to our younger bother. My sister and I help out my mom out a lot and again we have a good relationship. I done other things for her and my brothers . I’m just wondering why she posted it like this . My sister had a chat with our mom and her reason was to make my bother look good and because she didn’t think it was offensive . But I was and so was my sister..and she updated it and I see that she said sorry but why not message us? Why do it on a post? To me it seems like a annoyed apology. I just want y’alls options and I ask is this rude? Do my sister and I have the right to be upset?