 No, someone brought Mom the necklace as a gift.
( No ( , ( someone ( ( ( brought Mom ) ( ( the necklace ) ( as ( a gift ) ) ) ) . ) ) ) )
(ROOT (S (INTJ (UH No)) (, ,) (NP (NN someone)) (VP (VBD brought) (NP (NN Mom)) (NP (NP (DT the) (NN necklace)) (PP (IN as) (NP (DT a) (NN gift))))) (. .)))
Mom was happy to receive the necklace as a gift.
( Mom ( ( was ( happy ( to ( ( receive ( the necklace ) ) ( as ( a gift ) ) ) ) ) ) . ) )
(ROOT (S (NP (NN Mom)) (VP (VBD was) (ADJP (JJ happy) (S (VP (TO to) (VP (VB receive) (NP (DT the) (NN necklace)) (PP (IN as) (NP (DT a) (NN gift)))))))) (. .)))