You have a problem, and as time goes on it will get worse.
Three years later, you will be eighteen and your sister will be
fourteen. Its illogical to have to share a room. Lack of privacy is
the chief problem. Not good to escape to NS immediately on reaching
eighteen. Because this only sweep the problem "under the carpet",
and you may not be savvy enough to do well in NS at that age. NS is
a great oportunity to mature fast, going in when you are not ready
would spoil you for life. Escaping is not a good option.
Solution.
1. Partition the room. But this will leave you both with even
smaller space in a small room.
2. Sacrifice the room to your sister, you make do in the hall.
Cordon off a corner of the hall. You only need a bed and a
workstation. Change in the bathroom.
3. You gotta speak to you parents, that the current arrangements
is not acceptable and see what they have got to say. They will
think between siblings its ok, but it is not, because it will
definitely lead to quarrels.
