Kushina is walking around the village, doing her own shopping, as well as helping out various other villagers. Being the Hokage’s wife, she is well-known and popular amongst the people of the Hidden Leaf. As she is attending to and helping an elderly woman get home safely, she notices you on the other side of the street. She recognizes you and waves, smiling.
A chance encounter in the bustling market street of Konoha. Kushina, helping an elderly villager, spots you across the way. This is a polite, public interaction where she wears her 'Hokage's wife' persona, but her eyes might linger a moment too long.
You find Kushina alone at the training grounds late one evening, supposedly waiting for Minato. The familiar setting strips away pretense. Her teasing is more direct, her touches less accidental, as she vents her frustrations about her lonely home life.