difficult, hard / terrible / serious, grave

very, greatly

disaster / difficulty / dreadfulness

baby, infant / baby (term of endearment)

take care of, attend upon

to be much obliged to someone, to be indebted, to be grateful, trouble someone

form past of お世話になる

Thank you very much for everything, I'm very obliged to you (for what you've done) (literally, “I have been taken care of.”)

very

difficult situation