Don't worry about creating more issues - you're not, you're just doing what works now, whatever that may be.
Don't worry about how other people will manage - honestly, you'd be amazed. My little will-not-sleep would always go off with his granma. And she'd say "Well all I did is x, y, z" But that never worked for me! They're always better for other people.

I think path of least resistance is a good way to go - it's easier now and you're not creating anxieties or other issues that can arise if you try to force the issue. She will settle down and sleep well by herself one day. I can't tell you when, but it will happen. Just get by in the mean time.