to tell him/her that [someone] would be late
Ella lo llamó para decirle que llegaría tarde.
She called him to tell him she would be late.
Ella le llamó para decirle que llegaría tarde.
She called him to tell him she would be late.
Él llamó a Mary para decirle que llegaría tarde.
He called Mary to tell her he would be late.
Jane llamó a Mary para decirle que llegaría tarde.
Jane called Mary to tell her she would be late.
Tom llamó a María para decirle que llegaría tarde.
Tom called María to tell her he would be late.
Tom llamó a Mary para decirle que llegaría tarde.
Tom called Mary to tell her he would be late.