Thanks for your support. I was reading Tango L this weekend and noticed the word 'convention' being used for figures that are done by rote more or less...that they are led but it isn't soooo precise that the man places the woman's feet with his hands..(my interpretation)...anyway, the real improvisation (according to 'Tony") was the use of the simple back, front, side steps wherever they seem appropriate spontaneously. ...OK, then it's OK for me to show my partner how the cortado is done and how her left leg is dragged, by the impulse of the move, in front of her right and how the left leg then suddenbly comes alive and she springs as in the Cruzada step.
OK, I'll make an effort to persuade you of the error of your ways in both of you learning the OC as a set routine without perfecting technique first. Believe me, I know this from experience. The OC is only a commonly executed series of movements. The name is invented to label them and market tango lessons or make tango more accessible, whichever you prefer.
Tango is improvised almost one step at a time. It takes time as a leader to feel that, to be absorbed and involved with the music and respond to it with whatever feels appropriate to your partnership at the time and its abilities (not just your own). Meanwhile it's tempting to learn set routines, after all it's what teachers teach to give students a feeling of achievement which encourages them to come back repeatedly to classes. And classes can be very deconstructive, always not sure of what you are doing, learning, learning, learning instead of dancing, dancing, dancing.
Even worse you are getting your relative beginner partner into the habit of routines and pre-ordained patterns. You are doing her no favours. All leaders have experienced ladies completing the movement she thought it was rather than the one you intended. The common OC error is for her to end at the collect with a step into the forward ocho. To do this she has twist her torso away from you as it completely ignores your cross lead. It feels bad to you and perversely she probably thinks what a poor leader you are as you haven't disassociated to accommodate her. So you do learn to expect that possibility and release her. After all you can't clamp someone into the embrace against her will!
You should preferably perfect the individual components of the OC.
Talking about a foot drag into the cross doesn't seem right. It may be just your interpretation but the leg, and hence the foot, hang free, above the floor. Provided she has good balance and tone it should be a feeling to your partner that she has no alternative but for the foot/leg to float over the floor into the cross. It's weird and wonderful to feel, get someone to lead you and find out.
So lead the cross with a slight anticlock rotation. You may need to perfect body posture, tone, core strength and weighting or maybe your partner may need to. And bit by bit work on everything else with permutations. Get the simple stuff into your system and working fluidly and almost subconsciously, you seem to have the time. It may seem less rewarding, tedious even but it isn't in the long run. Think of it as the tango equivalent of a musician practising scales. It's easy to think that good dancing just happens: in the main it doesn't.
And I nearly forgot. Find practice partners who are somewhere nearer your ability/experience. Being the ongoing surrogate teacher of beginners doesn't necessarily help improve your own tango. But please reach them right, lead one step at a time, be patient while getting her to follow your chest, never breaking the connection. It pays off in the end. I have a wonderful practice and dance partner now as a result of all that. Still room for improvement in both of us and perhaps that will be the case for ever. But we both love Tango.
That's enough except to say it's your choice of course. Some argentinians will say make Tango your own which seems to be rather mysterious. But what they are really saying is it's improvised, we all improvise differently with our different bodies, minds and feelings. All we need to know, absorb and practice are the techniques and the movement possibilities. Then lose yourself, with your partner, in Tango; there's nothing like it.