No catch. It's as straightforward as you needing help, and me in the right place at the right time to do so.

[she doesn't really make a habit of keeping favors owed when she pulls people off the sidewalk - the too prideful ones, she compromised for, so they didn't feel looked down upon. but truthfully it's just that her hands are moved to help when they can, even if she did just get off work, even if this person is a complete stranger.]

Unless it wounds you to accept a stranger's hand?