Adam Clarke on Genesis 24:28

Her mother's house - Some have conjectured from this that her father Bethuel was dead; and the person called Bethuel, Gen 24:50, was a younger brother. This is possible, but the mother's house might be mentioned were even the father alive; for in Asiatic countries the women have apartments entirely separate from those of the men, in which their little children and grown-up daughters reside with them. This was probably the case here, though it is very likely that Bethuel was dead, as the whole business appears to be conducted by Rebekah's brothers.