I don’t think any of those schools would look at it that way. Even rich people want a deal. Assuming your kids has high stats for their school, the point of merit is to give her a reason to come to their school instead of someplace higher ranked where she might be accepted.
Historically Dickinson & Kenyon have not required FAFSA or CSS Profile when considering whether to offer merit aid (but I think I remember that Grinnell did). Could have changed in the last couple of years, though.