If you want anyone to answer you may want to add more to the inforamtionen than the name of her dam: damsire, greatdamsire.
What are you looking for as in what would you want to improve on your mare ?
Is your mare imported ? Do you have infoamrion on relatives of her and what they are doing under saddel or in breeding world ?
You do not need to explain to me about Calypso's breeding and for sure not that Contender is her halfbrother ! He is not as a halfbrother in breeder's language is only a horse that has the same dam.
Your mares pedigree is:
Calypso II - Pilot - Grundstein I - Pilot - Direx
Prisca has 7 offspring registered as show horse in Germany, for 6 I can find info regarding what level. It is quite impressive and it would be a shame to look for a stallion to do small hunter/jumper tests.
Good luck !
Well at least the pedigree is the same as for the only mare Prisca out of Grundel that I have found in the german database. And if so she had already a foal in 2012 by an stallion that is quite interesting pedigree wise.