I'm not sure I'd have suggested 60/40 in her favour - she might say that sets a precedent at a later hearing. Maybe just follow up with suggested dates the children to be with you (which is maybe what you have done already). Or if she hasn't responded then up the game a little perhaps, and email again saying, you have your time managed more and can have the children x hy and z (schedule) (ie more half the time) and say you will assume this is acceptable unless you hear otherwise. Even if a final order isn't 50/50 - holidays are always 50/50 (unless Dad wants less).