Welcome Gloriosa.
Is this a paid or voluntary position? A one off opportunity or something you might be able to do later on? I would probably say go for it but assuming that you lost your mum just before this Christmas I would also suggest you take some time to think about where you are in the grieving process - only you really know the answer to that one. Throwing yourself in to a new challenge is often a very positive thing to do, and if it is a paid position then maybe not something that will come your way again in a hurry. Sometimes things happen for a reason. Go with your instinct and good luck!