Favoritism?

My MIL shared the announcement and baby shower pics on social media of her first grandchild 2 years ago that is by her younger son but didn’t do the same for her second grandchild that I am currently carrying (8 months).

Maybe I’m overthinking it but it doesn’t seem fair to me. She even gifted her first grandchild “better gifts” jogger stroller, crib and gift us onesies and mittens (were thankful) but… Idk something doesn’t seem quite right 🤔