Stimulus HELP! My fiancee filed the non-employement & got $1200 + $500 for her daugher on the 1st. But she never recieved the 2ndStim $600 cus I filed their tax on mines!

I am filing an amend to fix the stimulus and it ask for 1st and 2nd round payment. This tax form is has me, fiancee, our daughter, and her daughter.  She never received the $600 from her daughter on 2nd stimulus because I filed them so she could not claim it! (She used unemployed-tool to filed the first one). What number do I crunch in the two box to fix this issue and get the $600 for her daughter!