Ouch. I suppose the moral of this story is to make sure you draw a line between employee and partner right up front, and be very firm about the roles. Obviously, ee's get a paycheck and little else, and partners equity and a little paycheck. Sounds like you put yourself in the position where an ee could hold you for ransom. You were paying her a good salary, and she had no risk. Lesson learned huh? So what do you do…
Not to be argumentative, but just to talk straight: you can "draw lines" between employer and employee all you want, but if both parties are rational, it's the market that enforces the line, not you. In other words, if you bring very little to the table, and your "employee" brings a lot to the table, you're setting yourself up to fail by being "clear" about an untenable arrangement.
Clearly, the poster underestimated her position and overestimated the dev's ability and that's what got her in trouble. With more knowledge, she could easily see that a django dev isn't worth 80K + 35%! In fact, I'm sure she'd get some bites (provided a solid idea) for the 35% alone from some very experienced people.
If the market did enforce the line, we wouldn't be having this discussion. :-)