There are many career options after M.Sc organic chemistry. I can you list you the career options:
1. After M.Sc you can get into pharma companies. Companies hire you for a good pay scale.
2. You can continue your higher studies like you can get into CSIR. But to get into CSIR is very difficult task and you need to have lot of dedication.
3. You can apply for government jobs. You can get into food and drugs department if not you can get into teching profession.
So dont worry about future after M.Sc Organic chemistry. You can get settled easily. So if your sister is intersted to do M.Sc in organic chemistry then let her do.
I hope this information is useful..Byee