Deeply sorry Dear One. I have been there, done that w-a-y too many times. It doesn't get easier.
I have no idea what your relationship is between you and your Mum. But the one thing I will say to you is that people generally don't understand. My babies ARE my babies. But to most, they are just animals. Their loss, for not understanding the love...
But I have come to accept (while yet resenting) their reactions. They do what they must do, as do I. I do, however, then choose to be more with people who know and understand - both the love, and the pain.
Sky, Lovely one - you are not alone. There are many who have greeted you on that side of the bridge. Many who, like you, will now wait for their Loved Ones. And, until they come, will look down with love and hope they feel it.
I hope you do.