Using large fowl (standard-size) chicken to brood and raise bantam chicks???

I have a very broody hen on my hands. I feel as though I spent all of last spring, summer and fall trying to break her of being broody. Every time it worked, but about two weeks later she would just go broody again. Hence, I am thinking about giving in and setting some bantam eggs under her. Just wondering if that's a good idea, or if I would be wasting my money on the eggs or causing the chicks harm. If anything, I thought it would definitely help with integrating them into the flock, especially since the hen has already proven herself to be a very good mama.

Just curious if anyone has experience using a large fowl broody hen to brood and raise bantam chicks? If so, did you experience any issues caused by having a larger hen sit on smaller eggs (crushing, etc.)? Any issues mixing large fowl and bantam eggs together? Or, did you have any issues with the chicks once they hatched?

Thanks in advance for any and all assistance!