You may find the reason for this, if you reread Anne's words. Anne did not make her wife aware that her plan was to try to "become a woman" (whatever you mean by that) because that was not Anne's plan.
Her therapist suggested hormones as a way to relieve the dysphoria and Anne discussed this option with her wife before agreeing. The WPATH guidelines are very clear that the use of hormones is not limited to those who will eventually transition completely but that this can be used by professionals to alleviate the symptoms of dysphoria without transition in certain cases.
Neither you, Rogina, nor Veronica are qualified medical practitioners treating Anne. Your uncharitable speculation as to what may or may not be Anne's motivation is just that: speculation.