I believe it when Lucien says that there is no chance anymore for Prince Friso to recover. But it was said in the beginning in February that it will need 6 months to really be sure that this is a permanent status he is in. So my impression ist that the DRF, especially the queen and Mabel, will wait for a final report from the doctors before they decide. I have the greatest respect possible for the queen and I never doubted Mabel's love for her husband, so I'm convinced they will decide the right thing their son and spouse. And if that means that sometime in August/September we hear that the prince died peacefully from his injuries, then I will pray for him and close this chapter for me. I'm sure it will take a long time for Mabel and her mother-in-law to heal but I don't believe for a moment that they are not capable of making even utmost tough decisions.
I hope Mabel may one day return to the Netherlands, so that her girls can grow up close to their paternal family, especially their cousins who are of similar age. Family helps enormously in cases like that and I believe the Dutch media will respect their fate and keep their distance.