Yes, that's literally what she's doing; goading him to be her ideal partner. He's not just going to magically become her husband if she just sits and waits.
I think this is a misunderstanding of how her foresight has been presented so far.
From what we've seen so far, her experience of reality reminds me a lot of "Story of Your Life" by Ted Chiang. Now, pointedly, Story of Your Life is not about actual precognition but something even more...
There’s the rub. The Book of Ages cannot be wrong; this scenario is based on the premise that a person is given knowledge of the actual future, not of some possible future. If this were Greek myth, circumstances would conspire to make her enact her fate despite her best efforts, but prophecies...
The "we're just 15 dude" line Ame pulls in this chapter or the how Umi's mom instantly regrets the way she shut her down - without apologizing - really keeps the heels of the emotional drama fairly grounded.
Vampire fiction is usually not particularly subtle about analogizing the bloodletting with sex, to say the least, but this mangaka seems to be having an absolute blast with it.
What the actual hell?
I was willing to go with the flowers-for-brains vibe right up until the last chapter and shishio-san just skates by without narrative consequence for basically physically overpowering her and forcing her into this.