Welcome @EmsPinky and congratulations to your DD. She'll be sent the time and date of her recall probably next weekend, along with some materials to prepare. If one of the two recall dates isn't good for you, if you email now they can probably accommodate that, but otherwise you won't know until then whether she is recalled on Saturday or Sunday. At the recall they are grouped by the show they are recalled for (there will be several slots for each show over the weekend), but they could be in with all ages and they may well read for different parts. If there's a video of a dance to learn, do that, and swot up on the song a bit, but don't worry about learning the bits of script - reading it is fine. There probably won't be a specific recall for the showcase, but they will look at all the recallees for that, and for the workshop.
Just to say in case it's not clear, not everyone recalled will get a show. Some who don't get a show or the showcase will be asked to do the workshop (which is really worth doing) and some unfortunately won't get a place this time - but to have been recalled is a big achievement in itself.