January 29, 2015 7:20 AM CET
It sounds like acts of service may be her love language, that may explain her getting depressed whenever an errand isn't done. However I believe some lines need to be drawn here. The truth is that she needs to realize that you cannot be there for her all the time, also she needs to learn to do certain things herself (depending on the errand). Let there be a balance. You can do other acts of service besides running errands. Let her not get too used to you doing things for her and you don't do things to the point that it feels like a chore. Especially if you love her, it must come out of your heart.
Secondly, she needs to stop using emotional blackmail to get you into doing things. Love doesn't put itself first. The Bible always encourages us to put others ahead of yourself. Both of you need to sit and talk about this particular issue.