So uh... this is a day late I know, but IIRC:

Cry of happiness is still crying?

I will grant that Jaina is strong. I will grant that gewalt is wrong. I think Blayze is wrong too. But still.

She turned and ran away crying from Arthas. That's strength to stand up for what's right from her near-husband, but she still cried.

She cried trying to get people to listen to her and leave. She still cried when she did leave to go to Kalimdor. She had the strength to do what was right, but it's still sad and she probably wept at the thought of those left behind that wouldn't listen.

She cried in mourning of her father, even if she did have the strength to do what was right and let him be killed.

I'm not sure, but I bet there were tears of rage in Undercity. There were tears of lament as she raided icecrown. There were tears of pride at Varian letting Saurfang reclaim his son's bodies.

She may be strong, but she isn't stoic strong. She does what's right, but it always seems to cost her dearly. If Metzen continues to make her strong by forcing her to sacrifice those she cares about this way, then yes, she probably will cry every page. Otherwise she will probably marry Varian, which is equally sad. Not that Varian doesn't have his reasons for being how he is, but after all both have been through, they both deserve better and it just sets up more drama (and probably another set up sacrifice) later.