yeah i agree with bfg, at least go and see the complaint, you cant just think she has the problem.
i did have one customer who i went back to about 5 times over 3 years, youve got to give them a chance. i did stop going to mine, then i get a call when are you coming to do my windows, so i thought ok i will take you on again, then she dumped me. ha ha,. i think she wanted to have the satisfaction!