I'm glad to see a young woman who prefers to become an engineer.
I do not believe that a major can find people a (better) job.
People themselves can seek for opportunities and success.
Let me give you some ideas what can you do after graduate from instrumentation and electrical engineering.
They both have programming languages included. You can use whatever you want (C++, matlab..)
If you graduate from instrumentation engineering, you can work as operation, maintenance, purchasing engineer in the power plants, industrial places, wherever a process is implemented. Or, you can work at manufacturers, distributers, contractors to sell or operate the products or the systems or you can work at the R&D department.
When it comes to electrical engineering, you also can work at the same places I mentioned above. Where your interest may be more on bigger systems such as High/Medium/Low Voltage Systems, Low Current Systems, Power Generation etc.
You can also work at operational/maintenance, purchasing, R&D, sales or project management.
I am probably missing some other sectors or areas that you can work.
But sum of all, there are lots of opportunities waiting for you in both professions.
I can suggest you to be the best in whatever you choose.