I think your Mom is still walking that beach - she's with you every time you walk it. She's with you in the projects you and Daddio make, in your gardens. She's with you in your heart, and that's a place she can never leave.
Beautifully said by Wanderingcatstudio. Cherish those memories and places she loved. It will bring you comfort.
awe she is with you most assuredly