Caitlyn Jenner‘s gritting through the loss of her longtime friend and manager earlier this week … getting back out into the world after the tragic ATV accident.

The reality star was spotted grabbing a cup of coffee in Malibu Thursday … looking casual in a light blue t-shirt, knee-length shorts and dark sunglasses.

Jenner’s a tough woman … holding it together in public — even giving onlookers a wave — despite the recent loss of Sophia Hutchins, her 29-year-old friend and manager.

She drove off with her coffee and a big black dog leaning it’s head out the window … seemingly enjoying the summer breeze.

These pics of Caitlyn were taken before we broke the story Thursday … law enforcement and family sources told us Sophia was riding an ATV on Caitlyn’s street Wednesday morning when she struck the back of a moving car.

Her vehicle careened off the road, 350 feet down into a ravine and she was pronounced dead at the scene … the wreckage was captured by a local news outlet via aerial footage.

Several people have also been spotted going down into the ravine to take a closer look at the wreckage.

Sophia joined up with Caitlyn back in 2015 … and, Hutchins appeared in several episodes of the show “I Am Cait.”