Faction for Ella Foodcrafter to take Warmly Glowing Stone?

[Synthlol]

I'm finally ready to finish my druid epic, but my past days hunting the weak hobbits of Rivervale have caught up to me. Ella Foodcrafter wants me dead, so of course she won't accept my Warmly Glowing Stone in exchange for the Elaborate Scimitar.

What faction level is required for this turn in? Can I open trade window, invis myself for indifferent, and get my scimitar that way? Or do I need to Puppet Strings charm her?

Most of the faction-pumping quests aren't available because all the hobbits hate me