eu a ouço a - mean feminine

How does 'a' mean her? I thought it meant 'the'

It depends on the sentence... I cant explain it... But theres sometimes where "a" takes the place of "her" and "o" for "him". Someone else will have to explain how/why

We've learned nominative pronouns. They seem to be inserting objective pronouns without explaining first.

I don't get it

How is this correct? I thought her was dela?!

'A ouço' means 'hear her'?

Could you say, "Eu ouço ela?"