By Madeline Coleman The Olympic skier’s father suddenly in February 2020 after an accident, and she detailed the grief in hopes of helping someone else. Mikaela Shiffrin gave insight into how she navigated the grief following her father’s death, and she may never stop grieving, something she is O.K. with. “It’s not linear. It’s not a climb up a mountain,” Shiffrin wrote in an essay published by The Players’ Tribune on Thursday. “It’s more like a maze. Some days, I feel O.K. Some days, it still feels as raw as when we walked into the hospital after our 10-hour flight home and saw him on the ven…