Hi Anna,
There is a way to do something like this in MoI. I guess it depends on the desired outcome.

I extracted the edge of your tree and joined it, then ran the RebuildCurve command with like 300 points to get a smooth, even curve. Then I created a network surface with a bunch of points in it. (The resolution could possibly be less to enable nice bending without to much work). Then I trimmed the surface with the tree curve. Then I ran the ShrinkTrimmedSrf command on the patch to bring its edges in close to the surface trim edges. THen I show points on the trimmed surface and selected a few and used MoI's rotation widget and placed its rotation point somewhere and bent the brach. Then I extruded the surface a bit.

Here's a file to see if it will do what you want and also show the steps.