Life is calling and I'm not ready to answer.

Right in the MIDDLE of the break up with the NARC/pimp, I was offered a great career opportunity. I am a clothing designer, master seamstress/pattern drafter. A high end store (THE high end store) here in town wants to sell my work....!!!...YEH!!!
I haven't worked for 20 years because I've been focused on my daughter(she's blind and a quadriplegic) When she was born I dropped everything to raise her. She's graduated now and I'm no longer bound to her school schedule.
The timing was perfect (or not?) Without the pathetic token pittance the narc contributed to the household I need the extra the income.
However I did not expect to completely collapse after I got the pimp out. I mean days...weeks in bed (I'm exhausted) Not answering my phone. Getting up only to do the bare minimum. I've had short runs of steady high energy and very productive days but I know my body and I can feel that I'm still very weak. My body says I need to REST.

The woman from the store has been phoning and phoning....and e mailing. I just can't bring myself to answer the phone. I feel like I owe her an explanation but at the same time I don't feel like I should have to explain NPD to her. It's been 7.5 months since the break up. She doesn't know anything about my personal life. I don't know what to tell her. I'm afraid it will sound like "Boo hoo...my abusive BF and I broke up and I'm depressed now."

I want/need the work EVENTUALLY...I DON'T KNOW when I'll be stable enough to commit to a producing a line. I feel like my priority is my recovery. On the other hand being creative and productive could be restorative (if I don't implode every other week)
At some point I OWE her some acknowledgement for the generous offer she made me. I still can't talk about it without having a violent physical reaction....anger or tears...or just a weirdness about me because I'm trying not to vomit.

*sigh.

Does anyone have ANY advice? What would you do? What DID you do when you weren't ready for "real life" How do you handle the real life when it starts calling?