She decided to be a medic-nin because she learned very early in her life that she is far, far better at healing people then tearing them apart. She still tears them apart, of course - she needs to so she could repair them, but, and in her mind it makes perfect sense - you have to break something to be able to glue it back together.
Just like she tried to do with her team.
Which in the end proved to be too hard and too far gone for even trying, least being whole again. So she turned to teaching herself all that she could, all the techniques, all the jutsus, even the ones Tsunade hid from her in the darkest corners of the Hokage's tower. She wanted to learn it all, to absorb it in so when finally one day he would find himself on her table she would be able to stitch him up so good he would never again fall apart.
Neither in her hands, or before her eyes. She waited and spent her time in mastering her teachings. She waited for him to come back, broken and battered, bruised and cut all over, spilling into her hands. Waited for him to fall apart so she could finally show him how good she is at mending people and that she's more then capable to mend him too.
...oio...
Later, after it's done, she's tired and very low on chakra and she can barely breathe. But he's there, alive and.. He's there. Just a few heartbeats away. As he turns his head to say something - maybe even a thank you, who knows - she opens her mouth and rushes in, because she does not want to hear that obligatory thank you note from his lips.
"I still love you." She lets it slip, even though that's not what she intended to say, but it's out and she feels relieved for some reason. Some things are better left unsaid, and some things just have to be said.
He closes his eyes and turns his head away from her. There's a painful in-draw of breath, and she knows that his lungs still hurt from the operation, but there's something in the air telling her that he absolutely needs to say this to her.
"I know."
Sakura smiles. And that is that.