She didn’t write it.
(But if it’s clear she did the deed. . .)
She wrote it, but she shouldn’t have. (It’s political, sexual, masculine, feminist.)
She wrote it, but look what she wrote about. (The bedroom, the kitchen, her family. Other women!)
She wrote it, but she wrote only one of it. (“Jane Eyre. Poor dear, that’s all she ever. . .”)
She wrote it, but she isn’t really an artist, and it isn’t really art. (It’s a thriller, a romance, a children’s book. It’s sci fi!)
She wrote it, but she had help. (Robert Browning. Branwell Bronte. Her own “masculine side.”)
She wrote it, but she’s an anomaly. (Woolf. With Leonard’s help....)
She wrote it BUT. . .
Joanna Russ in a short, useful book from 1983, How to Suppress Women’s Writing