Power is love and love is power. Master Spark is just a way to show love, under Marisa's language. Alice is an honor student in the study of this language.
(I’m assuming that the “kawaii” here is used in a derogatory-patronizing sort of “bless your little heart” kind of way)
そ*ぷす*ががが*ぷす**ぷす* So *pusu* ga ga ga *pusu* *pusu* – no idea what this part means, maybe it’s Alice trying to force a laugh despite having gotten wrecked
(Proudly)Oh, Patchouli? *cough* I was Master Sparked by Marisa five times today. *cough*Fufufu*cough*fu... she did not Master Spark you? Oh~ *cough* poor...*cough*you... gagaga*cough**cough*