I wouldn't recommend that Pepik try and upgrade his significant other. That seems like a pretty risky move on Pepik's part. What's he got going for him? His looks? Personality? Sexual prowess? No, No, and Hell no!
Living with him would be like living with a bad room mate. Eliska on the other hand is a solid 7.5 looks wise, keeps a clean and orderly house, is pretty drama free as far as women go, and can fuck your brains out. She could find a man in 2 seconds who would show her much more appreciation.
She just needs some human interaction on a daily basis, not his neanderthal way of life.
If you are referring to her drinking too much as the basis of your opinion, I believe that is just a symptom of loneliness and despair.