Those look like very tight timings indeed (in fact I'm not sure they are legal MCTs at all - minimum connection times). I personally don't think they can manage this unless the flights are perfectly on time.

Have you tried speaking to Delta or KLM? Orbitz will not likely have been the one that changed your flights, but rather the operating carrier (maybe flight times have changed, etc). If they are returning on Delta (and it sounds like they are) you should find out from them what is going on and what changes might be made (which Orbitz will probably have to do). Unfortunately you will not have access to EU261 compensation as it is a US airline ex-US, though Delta may accommodate you daughter and grand-daughters if they miss their flights because of the short connection.