I will attempt an English translation using my AP Spanish knowledge from high school:
To my adorable daughters,
I have to confess that I do not feel so well
as before, life has given me hardship, and the pain
gets greater each day.
I never though I would arrive at this moment, but today I have
no other solution.
Take care, remember that I will always love you all,
and I am always watching from the sky,
Your dear mother