Meaning of the Sanskrit Word: tasyai

  tasyai—unto that    SB 6.17.1, SB 7.4.22-23
  tasyai—unto her    SB 6.14.28
  tasyai—unto Sukanya    SB 9.3.17
  tasyai—unto her (Devayani)    SB 9.18.19

Can't find any compound Sanskrit words containing tasyai.