(Following is not in accordance with standard horary delineation and uses whole sign house format)
I think it is questionable that she lost it (as she said she did)
-she = 7th house (regardless of her relationship with your daughter we are considering her as the other person here, subject matter of the question)
-7th house = Gemini, which posits the SN: this immediately (for me) throws the honesty/reliability of this person into at least some doubt
-her money = 2nd from the 7th = Cancer = Moon
-Moon is posited in Scorpio (secrets) and in the 12th house of the chart (hidden things; hidden "enemies") Means (to me) the $ is either hidden somewhere, or the person is being secretive about what actually happened to it (perhaps she is just claiming to have lost it, for some reason) To me this is more likely because this person is already put under a bit of a cloud by the SN positing her signifying house
-Mercury, her significator, is retrograde and in partile conjunction with Mars, lord of the charts 12th house of secrets. etc, which also disposits the rxMercury; these additional connections make me further question whether this person actually "lost" this money as she claimed to you she did...
(Note: I essentially agree with Tikana's final conclusion in this matter)