Indirect / Direct object sentence help

Question

Is this sentence grammatically correct?

Yo se las doy a mi hermana. (the "las" is talking about "flores.")

Answer 1

You don't need the pronoun 'yo' because 'doy' can only be you

So if you drop the yo and are trying to say "i give them to my sister" that's all good.

If you wanted to say "I gave them to my sister" then you would have to use di instead of doy.