After this episode, I don't particularly trust Bella anymore. It really felt like she was trying to turn the MC against Elaine and she was playing up the whole lovey-dovey, girlfriend thing (if you're on that path with her) a bit too much. Elaine's reasons for thinking Bella should move out are quite understandable; she feels like she's a burden to Bella and holding her back from her own life, so she thinks that Bella moving out would be good for her to get her own independent life back again. But Bella just went straight to conspiracy town and thinks this is some tactic to get rid of her as part of her wanting the inheritance.
Also, I kind of agree on your point about the relationships, because it does feel that by limiting the relationships you have in the game, it limits the content of the game, and not just in terms of sexual content, but in terms of character development, relationship development (the non-sexual aspects), and general character/plot exposition.