Final answer:
The provided excerpts do not clearly indicate who comes to pick up Emma from her weekend with Aunt Lisa, thus a definitive answer cannot be given based on the given information.
Step-by-step explanation:
Based on the provided excerpts, it is unclear who comes to pick up Emma from her weekend with aunt Lisa. The texts given include dialogue from different characters and contexts, none of which directly references Emma or her departure from Aunt Lisa's place. A commonality in these texts is the depiction of family dynamics and personal interactions. However, with the information at hand, one cannot accurately determine the answer to the student's question.