The thing is if these problems affected the sales, a big fall of sales would happen in one of that months. However, the fall of sales for Batwoman is gradual, but constant.
I would put the sales for Batwoman in 2012:
Batwoman #5 51,924
Batwoman #6 49,227
Batwoman #7 46,974
Batwoman #8 45,341
Batwoman #9 43,942
Batwoman #10 41,014
Batwoman #11 38,980
Batwoman #12 38,064 (Wonder Woman)
Batwoman #13 37,315
Batwoman #14 36,925
Batwoman #15 34,964