A= i am not sure if this goes too far, but i thought he killed her to take up her place (at the phone he is negotiating that he not only receives physical rewards like land etc. but that he should be also considered as a doubleagent who made all this bad stuff only for a good purpose. so he wants some kind of hero reputation also) and because there is a possibility that bridget interfers with his plans during the whole assasination going on and afterwards ( she is on the side of the us, but also a german = she is acting because out of a view of belief in the right thing, so the possible consequences could be immense if she is revealing the truth about landa after the war...while aldo and the little man are only perceived by him as being tools of the us but not a real danger) .
+ feeding his sadism and the joy of killing a women with his bare hands is the sugar on the top perhaps


B=
(landa expected that aldo got the same kind of code...at the beginning landa is telling the father who hides the jews that he will not be punished but rewarded for giving out the jews! and nothing in the movie hints to a fact that he doesnt follow this promise- probably for landa it is not logical to punish people who helps you (seems to be a longterm-thinker)

PS: i love it how people accidentally always mix up landa and lando (-:
PPS: i also love that the cruelst weapon in the film is a baseball bat. i am sure you can find some deeper meaning in it if you search for one, dont know which althought ( i am also the oppinion that in pulp fiction it has a deaper meaning that butch is first taking a baseballbat, then a chainsaw and last a sword to rescue marsellus wallace...like taking superlative steps...from real weapon to horrorfilmweapon to a true warrior weapon of honor (which makes sense cause he is rescueing his archrival because of a moral code -the code gayness is just too much for an hetero (-
either if its true or not , meant or not from tarantino, i really can only admire that the movie offers the possibility to find such stuff in details...like eli roth is killing the supermainvillain of reality..(EMPHASIZE)as the only director out of a cast of actors...and the whole cinema scene is built into a big crematorium for nazis...