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But also, if you're in any doubt that she'll be instantly enthusiastic to try Femdom in bed, do you think there's much chance of her reading a book on it?
Generally, if you want to introduce a friend or partner to a new hobby, you, not she, must make the effort.
If it was golf, or hill walking, or tango dancing, you'd arrange a taster session, and make it as easy and pleasant as possible so she could discover whether and how she liked it herself, without your pressure to put her off.
Why should Femdom be different? Your fantasy, your responsibility!