OU Honors is good, but if she wants East Coast (especially wrt Law school) she should target colleges where she will get merit scholarships.
Some universities simply don’t offer merit scholarships. If you run the NPC and they’re not affordable, no point in applying - however identifying these means we can find universities that are similar enough to be good fits but would also offer merit aid.
It’s not a binary, OU or Ivy League. There are lots of possibilities for her where you won’t be full pay but which will also give her choices in the Spring.
There are LOTS of colleges on the East Coast where she’d get merit aid and receive excellent preparation for Law School, either through reading/writing intensive classes, or through career center support&alumni network, etc.
She needs to identify her deal breakers (D1 spectator sports? Walkable college town or city, just a walkable urban area, 100+k pop, within 30mn of a metropolis …?) - and if you can, identify your budget. Is it OU+10k? 50k all in? Etc.
Then we can help you more efficiently. 
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