She met Littlefinger in secret, he offered her whatever she would require from him. And he had the troops of the Vale with him. She denies him. She keeps pestering Jon for more troops. He confirms that they'd need more but that they tried all options. Sansa obviously changed her mind and sent for Littlefinger, she doesn't tell Jon a single word about that option though, resulting in him trying a battle that almost gets them all killed. She acts like she did great.
Shout by SilrogVIP 4BlockedParentSpoilers2018-03-25T14:53:57Z
So let me sum up Sansa's decisions:
She met Littlefinger in secret, he offered her whatever she would require from him. And he had the troops of the Vale with him. She denies him.
She keeps pestering Jon for more troops. He confirms that they'd need more but that they tried all options.
Sansa obviously changed her mind and sent for Littlefinger, she doesn't tell Jon a single word about that option though, resulting in him trying a battle that almost gets them all killed.
She acts like she did great.