a sparkling newcomer who instantly transform themselves into a believable mother/daughter pair 
(ROOT (NP (NP (DT a) (JJ sparkling) (NN newcomer)) (SBAR (WHNP (WP who)) (S (ADVP (RB instantly)) (VP (VBP transform) (NP (PRP themselves)) (PP (IN into) (NP (DT a) (JJ believable) (NML (NN mother) (, /) (NN daughter)) (NN pair))))))))
(ROOT (NP (NP (DT ) (JJ ) (NN )) (SBAR (WHNP (WP )) (S (ADVP (RB )) (VP (VBP ) (NP (PRP )) (PP (IN ) (NP (DT ) (JJ ) (NML (NN ) (, ) (NN )) (NN ))))))))