I have a couple of suggestions.
First, Fix these bugs/glitches
Before that, though, good job on what you have made so far! Hope you take it farther!
But, there are still some glitches.
First off, if she steps up a block, what she's wearing will glitch back behind her before going back to her. (basically, it takes half a second after stepping up a block for her clothes to do the same.
Also, if you put a piece of clothing that takes up the chest and feet slots on her (like, for example, this robe, the Lunar Cultist's robe), it only shows the top part. The part of the robe that covers her feet doesn't show, even if you didn't have anything there before.
Now, time for suggestions.
1) Work out a way to dye specific pieces with any color dye you choose.
2) Make it so she can wear accessories (5 at most). Also, if you can, make those able to be dyed too.
3) Make her able to follow you around.
4) Make more options for actions towards her other than "gift" or "pat". I think you should add an option where you could talk to her, which makes her say something. The things she would say would be different than her greeting messages.
5) Based on your actions towards her, make her show different emotions (chat-bubble wise, like the game already provides) when around her or doing such actions towards her. Also change what she says based on that too. (example: when you first pat her, she gets angry and she'll say something mean, otherwise she'll just say normal things, then the more you talk to her, the more she seems to like you)
There. Some suggestions. Also, I say this again because I mean it: Good job on the mod! This is actually something I thought about being able to do when I first saw a lost girl and got killed by her nymph counterpart.