Genuinely some of the best, if not outright the best, VA I've heard in a porn game. Let alone one focused on vore and currently free. The ability to go right into vore is nice, and the wholesome route of a nice date is really sweet.
As for criticisms, I think the vore is actually the weakest part of the entire thing. It's lacking in description and is very, very short. The writing as a whole is rather succinct and lacking in extra detail or flair, mainly just getting the point across. It sadly does boil down to "Emotionless player goes on date". We see very little personality from Cristina, other than that she is a bit of a nerd girl.
For a 0.1 release, it's a great start, but I definitely think it could be improved. Not just expanded, but rewritten with a bit more time put into it. Make her feel a bit less two dimensional, maybe add in some slightly meaningless options that let the player both feel more engaged and also get more responses from your date, and so on.
That all said and done, fantastic work. One of very few porn VNs I actually took the time to read rather than just skipping through.