That sucks to be taken advantage of like that. Also if she's out for a run....does that mean she got someone else to handle drop off for her older one?
We occasionally give one of DD's friends a ride and I'm happy to help out, and also it works pretty well for us- she shows up 15 min before we have to leave and it helps my kids get themself pulled together, DS doesn't want to be in his PJ's, DD wants to appear like she's got it together like her friend, etc. Even so I can't imagine it working if she came an hour early everyday, that would be way too much and disruptive. You really have been very generous with her and I'm sorry she took advantage of your kindness.
~ Dawn
Our little monkey (4/2011) & his early holiday present 12/12