As has been discussed often, consider it a positive sign, but not an indication of a pending appointment. It indicates your DD is still seen as an attractive, viable candidate, who IF she is offered an appointment, USNA would like to see on I Day.
Said another way, it means at time of CVW offer being extended, she remains both viable and attractive as a candidate. And that she's not been tabbed to get a TWE.
Positve, yes. Affirming and encouraging, yes. Confirming, no. Don't get carried away ... yet. Pucker factor remains high.