In the latest episode she collected two corrupted gems and rudely said "Look Rose!" Or something, showing she has a plan.
Since Jasper was fusion hungry in Alone at Sea, she may try to fuse with them, but corrupted gems probably cant fuse. She may take them back to homeworld for experiments but she probably knows she cant go back. Or she may be building an army against the CGs.
So she may be trying to fuse with, shatter/experiment, or train the gems.
By the way, one gem was most likely Biggs and the other is Ocean Jasper of Crazy lace