I know all the discussions are about the speed of travel, but also when Gendry left and Jon says "tell Dany what happened here" nothing had yet happened.
There was a rumbling (of a horde) in the bg, but I don't know exactly what additional details Gendry was going to provide that Dany didn't already know was a possibility beyond the wall.
I mean this isn't really that big. Jon spent some time with Danny and each time she or even others talked about anything other than the WW he would bring up the NK. Safe to assume he mentioned that going beyond the wall means they could face the NK. Again makes the whole plan dumb as shit, but Gendry probably told Davos that they caught a WW but then he alerted the larger group.
They can put 2+2 together. Of course all of this can be avoided if they had Bran see in a vision what is happening or about to happen, and he sends a raven to Danny.
She did. A lot.
Yeah no. She hated her as siblings often hate their older or younger siblings. Not to the point that she wanted to kill her. Sansa was never on her list.
And again that was years ago. After all they have been through, this shouldn't matter at all.