so my friend is starting to use me and call me more cuz I have a car now and I have trouble saying no cuz she's trying…

so my friend is starting to use me and call me more cuz I have a car now and I have trouble saying no cuz she's trying to get her shit together she's got training for three days in a town that's an hour away for me and that would include me driving to town picking her up getting her situated (getting her son's car seat put in and get him settled) (that's not including me getting Sophia dressed and situated in her car seat before I go and pick her and her son up )and I mead I can do it Monday but the other two days I can cuz I've got my store I need to open what can or should I do??? I'm conflicted between wanting to help her to not wanting to help her