struggling novice needing advise

Hi my name is Sarah and I'm a passionate but novice gardener and a newby to forum's, so please forgive any mistakes I may make, either in the garden, or any protocol I may not follow correctly on the forum!

So here goes..... I live in the South west of England and have had my Butia Capitata for 3 years, I bought a relatively mature plant, for the first two years it was happily living in a very large pot on my patio and last summer we moved it into its final home in a large planter with drainage built in, and for the rest of the year it seemed to like its new home. Even though we didn't experience the worst of the winter down here in the south, we did have a big freeze prior to Xmas and snow for about 10 days in January, however although some of the new fronds from last years growth turned brown Butia appeared unharmed. However the other evevning, with the essential glass of wine in one hand, strolling around the garden i was horrified to find that all the fronds on the aforementioned jelly palm seemd to have closed up and the tips appeared brown, it looks very sad and stressed. I did think it may be thirsty, but the soil was not excessively dry, i did however give it a good soaking in the hope that this was the problem, sadly there has been no change.
I guess my question to the forum would be, is it possible that my jelly palm is just in need of water or could it be suffering from something more sinister and if so what can i do, if anything, to help it recover.
Wow what an essay, hope your still with me. Thanks for listening. Any advise would be gratefully recieved.