Will she grow enough in order to start mainlining technique ?

I don't see the point in mainlining an auto or an outdoor plant. The stress from mainlining an auto will probably hurt it, keep it small, and it will flower before you're ready. Outdoors gets plenty of light and height isn't much of an issue, so mainlining doesnt make much sense to me there either. Even with photos, your end yield may be better, your buds may be prettier, but is it worth adding weeks and weeks to your total grow time? I dont think so. Defoliate to open up bud sites to light and that's it. My opinion, of course, I'm sure its hotly debated, but most people wont even top an auto.