the aleph can allude to the av (father), while the bais can be said to refer to ‘ben’ or son… Hence… there is an allusion to the essential and correct relationship: father-to-son (or mother-to-daughter).
My wife pointed out that aleph can also stand for ‘aim’ (mother) and the bais can refer to ‘bas’, daughter, hence also alluding to the relationship between mother and daughter, and also in all directions; father to daughter and mother to son seeing as both father and mother begin with aleph while both son and daughter start with beis.