Sure, here is the translation of the sentence along with the hiragana reading for each part:
Japanese Sentence with Hiragana Reading:
もし (もし)
moshi
If
私の母が (わたしのははが)
watashi no haha ga
my mother
病気の時でさえも (びょうきのときでさえも)
byouki no toki de sae mo
even when sick
お金を欲しいと言う (おかねをほしいという)
okane o hoshii to iu
asks for money
彼女の願いは (かのじょのねがいは)
kanojo no negai wa
her request
断ります (ことわります)
kotowarimasu
I will refuse
Translation:
"Even if my mother is sick, I will refuse her request for money."