Asalam alaikom wa rahma tullah wa burrahktohu,
Dear sister,
I am sorry to read of your circumstances and of course pray that Allah bestows His blessings, guidance and mercy upon your grandfather. ameen.
Please allow me to tentatively offer you some knowledge which inshAllah I am sure you will be grateful for.
Allah has made Islam a blessing for all time and it is not obligatory for you to seek work, it is the resposibility of your husband - even if you are able to earn more. Please see here:
http://qa.sunnipath.com/issue_view.asp?HD=3&ID=7355&CATE=443
http://qa.sunnipath.com/issue_view.asp?HD=12&ID=4337&CATE=205
http://qa.sunnipath.com/issue_view.asp?HD=1&ID=1497&CATE=89
Spending for wife's comfort
It is narrated by Abu-Darda (radhiallaho anho) that the Prophet (sallallaho alaihi wasallam) instructed me: "Spend as much as possible upon your family. . . " (Kanz)
This is indeed a source of encouragement to spend for the comfort of women. The husband is also under an obligation to maintain his wife irrespective of whether she is rich or poor .
Those who are not generous with their wives should take heed of this advice.
further areas of concern in your post are both the fiqh of leaving your husband for a year & travelling without a mahram. Please be careful dear sister & see a reputable scholar (may I suggest you attend the livelink on Sunday with sheikh Assim al Hakeem?)
http://qa.sunnipath.com/issue_view.asp?HD=3&ID=3738&CATE=383
http://qa.sunnipath.com/issue_view.asp?HD=1&ID=1993&CATE=143
http://qa.sunnipath.com/issue_view.asp?id=1003
http://qa.sunnipath.com/issue_view.asp?HD=1&ID=2364&CATE=100
And ma'shAllah here is a very good collection of duas, you should pray (if you haven't done so already) Istikharah and you can also offer duas for your grandfather too.
http://www.islamic-knowledge.com/Hisn_al_Muslim/Hisn_Al_Muslim.htm#Alphabetical Index
May Allah t'ala bless your household with much good in this life and the one to follow. Ameen.
Jazak alak khairun wa barak Allah feekom
Fi amanillah