Quote 1
"I keep [my diary] in this." As he spoke he laid his hand on the phonograph. I felt quite excited over it, and blurted out:—
"Why, this beats even shorthand! May I hear it say something?" (17.16-17)
Mina is as excited to see a real phonograph as we are to see the latest smartphone.
Quote 2
I feel very solemn, but very, very happy. Jonathan woke a little after the hour, and all was ready, and he sat up in bed, propped up with pillows. He answered his "I will" firmly and strongly. I could hardly speak; my heart was so full that even those words seemed to choke me. (9.4)
Mina hardly sounds like a glowing, blushing, happy bride. She says she's happy, but she almost seems to insist on it too much. Even the words "I will" seemed to "choke" her. Isn't she happy to be married to Jonathan?
Quote 3
I must stop, for Jonathan is waking—I must attend to my husband! (9.6)
Here's a taste of Mina's ideal of marriage—"attend[ing] to [her] husband." She's such a tender, maternal person that she nurtures everyone.
Quote 4
[…] I asked Dr Seward to give me a little opiate of some kind, as I had not slept well the night before. He very kindly made me up a sleeping draught, which he gave to me, telling me that it would do me no harm, as it was very mild. (19.40)
Even Mina—virtuous, innocent Mina—asks to take some kind of opiate when she has trouble sleeping.
Quote 5
It is a very strange thing, this sleep-walking, for as soon as her will is thwarted in any physical way, her intention, if there be any, disappears, and she yields herself almost exactly to the routine of her life. (7.30)
Lucy is so passive while sleepwalking that Mina is able to redirect her easily enough—as long as she does so physically.
Quote 6
I would have got out to make certain on the point, but some leaden lethargy seemed to chain my limbs and even my will. I lay still and endured; that was all. (19.39)
As Mina is having her blood sucked for the first time, she finds a kind of "lethargy" or passivity creeping over her.
Quote 7
I believe we should have shocked the "New Woman" with our appetites. (8.1)
Mina and Lucy go on a long walk, and are so hungry when they get back that they eat a huge amount, without worrying about being prim and proper.
Quote 8
Some of the "New Women" writers will some day start an idea that men and women should be allowed to see each other asleep before proposing or accepting. But I suppose the New Woman won't condescend in future to accept; she will do the proposing herself. And a nice job she will make of it, too! There's some consolation in that. (8.1)
Is Mina making fun of the "New Women"? It's not totally clear. Is she being sarcastic when she says, "And a nice job she will make of it, too"? Mina's not the type of woman who would ever propose to a man—she'd wait to be proposed to. But she's not usually that sarcastic, either. So maybe this is a place where Bram Stoker's own voice is coming in—perhaps he's using Mina as a mouthpiece to poke fun at progressive women.
Quote 9
We women have something of the mother in us that makes us rise above smaller matters when the mother-spirit is invoked. (17.59)
Mina makes a generalization about all women here—she claims that all women are, somewhere deep down, very nurturing and maternal. They just have to have the right inspiration for that "mother-spirit" to come out.