Thanks for playing!
Yes, you are correct in listing the limitations of the free version. You can't have a closer relationship with Ulfa yet, but it will definitely be possible in the future.
The patreon build includes sexual content with Astrid, a few bosses and gameplay in the swamps, and also a very spicy situation with Mary ;)
There are no restrictions on siriming. We will be happy if someone will record such a stream!