"My mother is better."

Translation: Mia madre sta meglio.

[fekundulo]

Why not sta meglia?

[davidlemke]

"Meglio" is not a gendered word, so there is no female version of it. So, for both genders it is meglio.

[xyphax]

lol ... This is perhaps the strangest thing that is happened to me yet while translating a sentence. I wrote
mia madre è moglie
then looked at it for about ten seconds and realized my 'dyslexic' mistake. After a few more seconds I realized what it actually meant!

[SteveCurti]

I put "la mia madre è meglio" and was surprised that that was incorrect.

[xyphax]

The article is omitted with singular family relationships ..
http://www.arnix.it/free-italian/italian-grammar/possessive-adjectives-in-italian.php

[Chrismakem]

Can è also be used here or must sta be used and if so why?

[Jose.Cazares]

I believe using è here denotes your mother being better than something else. Using sta would mean she is feeling better.