Reimu was known to be a quiet one and, generally, we've hardly ever heard her speak, if she spoke (so far, she only spoke to Youmu). However, she was still a child and children are most strangest in their earliest of years, so she was no different. Of course, she was stranger than any other human child and, while she made noise, she hardly ever thought to verbalize. She vocalized much like the pups and Chen did, which is to say, geckering and hissing, the latter of which often being directed at Chen.
It wasn't that she hasn't known language, as she has, it was just that she never spoke, except when Youmu's around, in which case, she spoke practically the same language that the latter did. What they conversed about was something we didn't know but it was amusing and interesting if they kept at it for an hour or two. Youmu did allow her to open up more to the others.
Silently, she opened up to us before one day when she said, "Rrr-ahn." The 'R' sound was almost silent yet the 'ahn' syllable was clear. Upon hearing her name called, Ran's ears jerked in curiousity and, like sunflowers facing the sun, her ears turned towards the child, whilst the rest of her followed suit. She was curious as to what the child wanted if she wasn't making sounds akin to a pup. Ran was the first youkai so far to extend a hand (or paw, in that case, as she wasn't in semi-human form) in kindness and the first youkai she encountered, thus, her name was the first one said.
Of all the time we've had her with us, in our family and this forest, we've never heard her say someone's name, yet, she seemed to have responded to hers. Names were almost alien to her, much like attention and the like, thus she was quite stunted in some areas of development, however, as with most human children (not so much living things), she had some innate need to bond with those close, so , due to said need, she acknowledged that others besides herself had names. It's also worth noting that Reimu hasn't really addressed anyone, however, the moment she enunciated Ran's name was when she started to.
Later that day, she turned to Ren and acted similar, although she she didn't say the "R" sound, just the " 'en" syllable, just calling him "En." Naturally, they became "An" and "En", in much the same vein that a child's parents would become "Haha" and "Chichi", thus to some extent, she acknowledged them as parental figures or something very similar.
When she noticed my presence, she was at a lost as to how to place a name for me. She sat silent before me, as if in some thought, before she finally opted to place a name for me. "Fukona-ha" was the name for me. Interestingly, it was not a random stringing together of syllables or words or saying a syllable of one's name, no, she gave me name that meant what she thought to be fitting. In all fairness, she didn't know I had a name, so she decided that I couldn't go without and, yet, I'd never think a child to be intuitive. Something within her sensed how unhappy my life had quite been, yet she acknowledged something else, too.
A wish.
Authoress Note: Dreadfully sorry for updating this late. I've been so busy, really, I have. Sincerely-Amoridere.