(sorry, I can't figure out if the last character 
in the first word is supposed to be ro, n, e, or 
what! ^^;)

mutsukashiie:  difficult 
(mutsukashi/mutsukashii means difficult)
sumimasen:  I'm sorry/forgive me
kakenai:  I can't write

with a sweatdrop after the second word and two 
after the third word.  Hopefully someone can 
clear up the first word, or perhaps it's just a 
way of making the word trail off?

Can we see the whole genga?  ;)