Idiot needs HELP!!!

SurfDog

I have an 09 touring sport. (Modded)
My (red)brake,(amber) ABS, (amber)VDC, (amber)TRAC CONTROL
Lights all came on so I concluded (correctly) than by brake fluid is low.

Here is the problem, I put brake fluid in my power steering reservoir (oops!) and drove around a week wondering if it was time for a new master cylinder. (Cause the lights stayed on (doh!).

I know brake fluid is nasty caustic stuff and worry it has damaged my steering mechanisms.

Three questions:
1. Will a steering fluid flush at brakes plus (using valvoline synthetic) sufficiently remove the brake fluid or do I need a more involved process?

2. What damage should I look for?

3. Can you guys please go gently on me for being such a bonehead? (That's more of a request than a question I suppose lol)

4. (Bonus question) What am I forgetting.

Thanks in advance for your input. When I looked over at the HUGE brake fluid label on the cover my heart almost exploded knowing I'd driven a few hundred miles with brake fluid in my steering rack!!!!

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09 6spd Berk CBE, JWT cams, ZSpeed CSC, Stillen (25 row oil, brake cooling, sways, gen3 CAI), Passport (9500ci), Quaife LSD, Z1 400 hp kit, ss lines, pads, rotors, clutch etc, Phunk's pan and fuel starve fix