>As I understood it, Remilia was born a vampire to the noble House of
>Scarlet, and her father was also a natural born vampire, in a noble
>line stretching back a long ways.

This is so.

>I assumed, therefore, that since she
>grew past being a baby that she's still growing, just very, very
>slowly, and will one day appear as an adult, like her father did.

This is not; she is an adult, she just happens to be a very petite one. If she were human, that's still as big as she would have gotten. (Her dress sense exaggerates the effect a bit, which is probably a hold-over from the fact that she didn't really "grow up" emotionally until she was nearly 300; but that was more a matter of choice than biology. She didn't have any reason to, so she never bothered.)

>(Or is it only male vampires that are fertile?

It is (and they are not very much so; it's really fairly remarkable that Victor and Remilia the Elder had two children within a mere five years). It's a side effect of the way their regeneration works—the vampire body, once full-grown (for born vampires) or turned (for those who started life as humans), resists change, which short-circuits the cyclical processes that normally make that kind of thing possible.

>If so, Dracula's tendency to collect vampire brides seems
>even nastier.)

Well, quite.

>Sorry again if I missed something in the text that explains all this.

The point about vampire fecundity is one of the things Flandre noticed while she was reading the Mysterium in Act III, although the text doesn't note whether she paused to reflect on it beyond thinking, "Wait, really?" She probably didn't expect to be able to have children herself anyway, given the age at which she was turned, but she was a bit surprised to find that no vampire woman can.

--G.
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