Ye they only have the same dad
The half-sister of your granddaughter's half-sister is your granddaughter, or is not related to you.
You grandmother's half-sister is your half-grandaunt.
You have no blood line relation, You don't share DNA whatsoever. In this scenario putting an example; you and your half-sister share, let's say, the same father but not the same mother and your half-sister's half-sister share the same mother but not the same father. There is no shared DNA between you and your half-sister's half-sister.
Roald Dahl called his sister Ellen his "Ancient Half Sister."
King Tuts wife was his half-sister.
She has 1 sister, a step-sister, a step-brother, a half-sister and a half-brother
your half sisters cousin would be your cousin
She doesn't have a half sister.
Sarai was Abram's half sister.
If your half-sister had a son that would be a half-nephew to you
Your half-brother's half-sister could be your full sister, or not related to you at all. For example, say your parents are Joe and Mary and your half-brother's parents are Mary and Steven. Say your half-brother's half-sister is Barbara. If Joe and Mary are Barbara's parents, then she is your full sister and your half-brother's half-sister. If Barbara's parents are Steven and Jane, then Barbara is not related to you (unless there is an adoption).
medio hermano is spanish for half brother and media hermana is spanish for half sister