Nope - according to the CCC masturbation = deliberate stimulation (not necessarily manual, can be done with a device or something) for the purposes of sexual arousal (meaning it doesn’t have do be to the point of orgasm).
You’re missing one key point: " ‘The deliberate use of the sexual faculty, for whatever reason,
outside of marriage is essentially contrary to its purpose.’ For here sexual pleasure is sought outside of ‘the sexual relationship which is demanded by the moral order an din which the total meaning of mutual self-giving and human procreation in the context of true love is achieved.’" It’s essential to the character of masturbation that it occur
outside the context of the marital act. Manual stimulation, even of one’s own self, may not be masturbation if it is in the context of a proper marital sex act.
There’s nothing in the catechism that distinguishes
who (or what, for that matter) is deliberately stimulating the genital organs. If it’s permissible for a husband to deliberately stimulate his wife’s genital organs in the context of a sex act, then it’s permissible for a wife to deliberately stimulate her own genital organs in the context of the sex act. Absolutely
nothing in the Catechism teaches otherwise.
The female orgasm is incredibly complex, and women who’ve married as virgins may not know enough about themselves and their sexuality to be able to teach their husbands to bring them to orgasm without first doing it themselves. As long as they do so in the context of the marital act and in the spirit of self-giving, there is nothing in the Catechism to say that they shouldn’t.
Jeremy