Silent partner
In “Changing of the Guard,” “Dallas’s” sixth-season opener, Holly and J.R. (Lois Chiles, Larry Hagman) sit at a table inside a darkened cocktail lounge.
HOLLY: Well, what do you say? Do we have a deal?
J.R.: [Leans forward] Well, it’s a very tempting offer. Especially coming from such a lovely young lady.
HOLLY: It’s a dynamite offer. And you know it. [Smiles, squeezes a lime into her drink] You’re out of Ewing Oil. And I don’t know a damn thing about running an oil company.
J.R.: You’re very bright. [Sips his drink]
HOLLY: I’m bright enough to know what I don’t know. [Smiles, stirs her drink]
J.R.: All right, I’ll accept your offer. I’ll run Harwood Oil for you — on one condition: that I stay completely in the background. Nobody’s to know of my involvement.
HOLLY: Forever?
J.R.: Till I say so. You continue to act as president and I’ll give you all the moves. I don’t want an office, and I certainly don’t want to meet in your office.
HOLLY: Whatever you say. What about money? Or do you have somebody to take care of that for you?
J.R.: [Chuckles] Well, Holly, I think as you get to know me a little better, you’ll find that I take care of just about everything. I don’t want any money up front. But I do want 25 percent ownership of Harwood Oil.
HOLLY: [Smiling] Twenty-five percent? You don’t come cheap, do you J.R.?
J.R.: You wouldn’t want me if I did, would you? Look at it this way, Holly: With me, you have 75 percent of a profitable business. And without me, you just might have 100 percent of nothing.
HOLLY: [Long silence] All right. [Looks down, then back at him] Deal.
J.R.: [Smiles] That calls for a toast.
HOLLY: To Harwood Oil. Someday it may be bigger and stronger than Ewing Oil.
J.R.: [Hesitates, smiles, drinks] You know, it just occurred to me: I’ve only been out of work 48 hours.
HOLLY: [Smiles] To J.R. Ewing, back in power again.
J.R.: [Clinks her glass with his] As it should be.
Dallas Decoder 
To Me Holly Harwood was an idiot and deserved the hell JR put her through (not the rape). She let’s this guy into her father’s (now hers) company and did not do a background check on him or ask anyone anything about him. When JR said that he wanted his part in it, she did not think that was suspicious or his wanted a large chuck of Harwood Oil. Even when Bobby asked to have this guys checked out, she said nothing.
You’re right that Holly was pretty naive, but I think that’s part of what makes her an interesting character. I haven’t finished re-watching Season 6, but as I recall, we see Holly slowly wise up to J.R. and exact her revenge against him. And what a revenge it is!
Rape?