but with just a quick view of the situation I am going to guess your daughter has insurance offered through her employer. If that is the case then subsidies are not generally offered. Per the tool on the kaiser site...
In general, employees who are offered insurance through work are not eligible for subsidized exchange coverage, so long as their insurance meets specified requirements. You would only be eligible for subsidized exchange coverage if your income is between 1 and 4 times the federal poverty level and you would have to pay more than 9.5% of your household income for your own coverage through the insurance offered by your employer.
Run through this tool and see what it might say for you as you know the situation better.
http://kff.org/interactive/subsidy-calculator/
It might also be a good idea to give a navigator a call and see what they might be able to help you with.
Consumer Support Center
1-855-642-8572
Sorry I couldn't be more help.