A straightforward polite narrative sentence. 義母 ('mother-in-law') uses the prefix 義 for relatives acquired through marriage — similarly 義父 (father-in-law), 義兄 (brother-in-law). It contrasts with 実母 ('biological mother'). ロケット is 'locket' the jewelry pendant — identical spelling to 'rocket,' disambiguated by context. プレゼントする is the loanword+する verb for 'to give as a present.'