Galko's skin got really dark as a result of tanning.
Otako comments that since Galko's skin has tanned so much, her nipples must be dark as well. Along with Ojou, Otako yells that Galko has dark nipples.
and you can't be a mother—
ولا يمكنكِ أن تصبحي أماً
und kannst so keine Mutter sein.
y no puedes ser madre...
et ça t’empêche d’être mère !
E non puoi neanche diventare mamma...
aí não dá para ser mãe—