bazen beni görmezden geliyorsun,ama sonra acısını "çıkarırcasına",mutluluğa boğuyorsun.

can someone translate and break this word down please?

we use this idiom, acısını çıkartmak (pain + take out), when we try to take a pain (emotional suffering or mental distress given by someone or caused by something, sitting in heart) out and let go away. 

how can we do it? perhaps, taking revenge for... or indemnifying ourselves for a loss...

but, in this sentence, who takes the pain out, is not the one who is suffering himself, but the guilty one who herself (?) already made the other (him) suffer (by feigning, now and then, not to see him)   =>1-(bazen beni görmezden geliyorsun)

(I have a word to say, at this point, that it should be çıkarTırcasına (causative) instead of çıkarırcasına)

how can she (?) does that? perhaps, (in order to make him forgive her, perhaps) rewarding him with so much happiness as to be chocked... =>2-(mutluluğa boğuyorsun)

as for çıkarırcasına, just add as if to its meaning, and that´s all.