Last panel should just be "why did she kiss me?"
it's one of the wonky parts of English, where you would think "the dialogue is talking about an action that occured in the 'past', therefore I should use the past-tense version of the word (kissed)", but that's not actually correct due to how the rest of the sentence is worded, and you would need to use the present-tense version of the word (kiss). If the sentence had been something like "How come she [verb] me?", then "kissed" would have been the correct choice.
It's the kind of thing that you really only pick up on over time with exposure to English writing, so it's something that often trips up ESL folks, and at the same time really sticks out as being incorrect to native speakers.
Edit: Just to include some more info after looking in to it, it's specifically that the word "did" in the sentence acts as a "helper verb" (most often do/does/did) that signals the sentence is describing something in the past tense, in which case the actual verb is left in its present-tense state. With my example alternative sentence, it lacks a helper verb, therefore the actual verb is put in past-tense
