Head to the location of the quest marker below and you’ll hear a woman calling for someone. You have to find the climbing holds around the rock tower and climb up to the top where you’ll find a nora named Olara to start this quest.
You have to head to Brom’s camp as marked in the map, way far southwest of the Embrace. When you’re near the camp, you’ll see some watchers patrolling nearby. You can use the platform near the camp to snipe the watchers off from above.
After clearing the site, use your Focus to investigate the area. First, scan the campfire then examine it up close. Use your focus again to find the blood trail then press R1 to highlight trail. Keep following the trail until you find a bucket. Examine the bucket then use your focus again to reveal the trail. Highlight it once again so you can follow it.
Keep following the track while evading/ engaging the machines along the way. The track will bring you to Mother’s Watch. Use the campfire if needed then locate the desecrated shrine, a few steps away from the campfire.
Continue following the tracks again which will bring you to a group of scrappers. Destroy them all then examine the destroyed watcher. Use the Focus again to find the continuation of the trail and follow it. This trail will bring you to a large boulder near another settlement. Climb up the and examine the empty supply cache on the top of the boulder. Activate Focus again then continue with the trail once more.
While following the trail, you may pick up the discarded fast-travel pack and potion. Continue following the track and you’ll finally reach a rock formation that you can climb. Make your way to the top to find Brom. Talk to him which leads to a flashpoint. I suggest selecting the compassionate (heart) response. During the conversation, Olara will arrive and will help in convincing her brother. Quest complete!