講你好呀嘛佢會
I'll tell you what, she will.

Cantonese Sentence Breakdown

gong2
(verb) to tell
nei5
you (informal, as opposed to courteous 您nín [您])
can be used to refer to an unspecified person
hou3
to like
to love
to be fond of
to be liable to
to be likely to
haa1
(particle equivalent to 啊 after a vowel, expressing surprise or doubt)
maa4
used in transliteration, such as in 'lama'
heoi5
he
she
it (Cantonese)
Mandarin equivalent: 他tā [他]
wui6
a moment (Taiwan pr. for this sense is [huǐ])
metropolitan
gatherings union
to meet
to catch up