I have to speed because I am worried about my friend.
Is there an emergency that you are trying to get to?
I think she may be in trouble and I have to help.
If what is happening with your friend is that worrisome then it may be okay to do this. Caring about friends is such a good trait to have.
I have her best interested in mind when I can.
Your friend will really appreciate your efforts. Things like this do not go unnoticed between people.