his mom guilting me on his birthday

Me again! Lol

We celebrated 4 years together he surprised me a beautiful promise ring - I got him a really romantic hotel in Toronto. His birthday is tomorrow! I got home NBA tickets for the night of the hotel as a birthday present and I’m sooo excited!

Usually on Tuesday he has his “Guys Pub” night lol so we were just gonna so that for his dinner. Turns out all his friends have exams so he asked me for something else.

His mom came home and excitedly said “oh So I’m gonna make your favourite ribs tomorrow for your birthday” and he told her I already planned something he asked for... the rest of the evening she continuesly asks him for a day she can make him dinner (we have Christmas parties all week and then family Christmas on weekend start) she asked if we could do dinner on our planned weekend instead of his birthday “isn’t that the point of your special weekend anyways”

Is it fair for her to make me feel guilty about her not making him birthday dinner? Her other son lives with his fiancée 8+ hours away.

What can I do to help her see that the natural process is happening?? I’m so worried about what will come when we get engaged