So far appears to be Spanish based.
Yo soy... Me llamo Tuu.
I guess 'Imu' is like 'I'm'.
Double 'L' reads like 'Y' in Spanish (lla=ya)
So it translates to:
'Tuu' aside, I think 'tui' means 'tú' (you). I think she was asking his name when she says 'tui... ah?' when she's pointing at his face. No enough basis for that yet, though.
From last chapter:
Moma sui - na oupu tui ai.
From earlier, we know that 'Sui' means soy/ser (am/to be).
'Na oupu tui ai' Sound to me like 'una oportunidad': a/one opportunity.
So she's probably saying 'I'll give you an opportunity' or in better vernacular, 'I'll give you a chance'.
EDIT - Actually, that last paragraph may be completely wrong. When he grabs a sword she says 'de na oupu' and 'de oupu', so oupu seems to be its own word.
Anyway, here's her complete script:
(he moves to grab the sword)
De na oupu!
De oupu!
(she gets into combat/threatening position)
Gosu,
de paidouh
nuhi neu
sui tojuu!
Toju sui
de pai douh!
Do a ha!
Oupu Nieneei
De..!
De mi jaa!
Go... Gogo ah!
Pado ah!
(Pointing at his face)
Tui...
Ah...?
(He makes gestures of writing.)
...Pemedouh dieh
...Imu,
miu imu.
(She takes the sword and makes to leave)
...Moma sui
Na oupu tui ai-.