"You two...you're gonna go far, but only if you keep learning, if you never stop moving forward." - advice from Qrow to Yang and Ruby. 'Moving forward' was also something that Monty said as one of his most famous quotes.
Source: Qrow Branwen,Volume 3, Chapter 4 "Lessons Learned."
The weight of being a leader had finally got to her. On their last mission, she had put the lives of her teammates at risk because of her own needs. They could've died if they hadn't fled. Summer sat at the side of her bed, thinking about all of the mistakes she made during the mission. She hadn't taken Raven's advice to go around the Goliath Grimm, she tried to have them attack one while they were still tired and weak from crossing so much land, and not to mention all of the missed swings she made at the Goliath.
As if she didn't feel enough guilt for doing so, Taiyang was now in the infirmary after the Goliath had rammed him into a tree. She felt hot tears well up in her eyes and she quickly tried to brush them away. It was all her fault. If she had only listened for just a moment, or even a small second, Tai wouldn't be hurt. Even a bigger disappointment was that they didn't even succeed in their mission. The Goliath was still wandering around near the village, and who knows when it would attack.
The tears fell freely, dropping onto her lap. All of the emotional stress leading up to this enormous debacle was poured out. Summer cried silently and her shoulders quivered. Then, she heard footsteps approaching the door. Quickly, she wiped the tears away and blinked her eyes furiously, trying to get rid of any traces of tears. She stood up and began to straighten the bed, trying to look normal before anyone came.
Qrow opened the door, his combination of a weapon on his back. He took one look at her and sighed.
"Summer, you know you don't have to hide from me," he said, surprisingly gentle.
"What do you mean?" She asked, trying to sound positive.
He gave her the just drop the act look. "What's wrong?"
"I just…" she looked away. "I feel like it's my fault. Wait, I meant I know it's my fault."
"Taiyang ran in there like the crazy person he is," Qrow responded. "It's not your fault."
She looked down at her hands. She didn't want Qrow to take pity on her; she wanted to be strong. Well, she thought. It's best just to tell him the truth. "I think they made a mistake. Any of you but me would be better at being a leader."
He took this quietly, and sat next to her. "Summer, wake up. You're not yourself. You can't take all of our problems onto you and say it was your fault. We just became a team that trusted each other, so you can't let us down. Stop pushing yourself back."
"Qrow, stop faking. You know I'm right. My mistakes-"
"You make mistakes because you're human," he interrupted. "Just like me, or Raven, or Tai...or even Professor Ozpin. Heck, even the headmaster makes mistakes. You need to keep moving forward. Being all sad and depressed won't help you or anyone else."
As the words processed in her mind, she suddenly smiled.
"What is it?" he asked.
"When did you get so mushy and caring?" She laughed.
His face reddened and he crossed his arms. "In my defense, I have an antisocial and moody sister. I've had a lot of practice."