How can i submit/train jasmine, talk to her in Saturday or Sunday don't do anything and whhen i use the potion for jasmine my game crash
So after you talk to Jasmine and make a deal with her, you can start training her in her room.
But Jasmine will be busy on weekends, so she can only be trained in her room during the week.
When you reach the point where Jasmine asks you to buy medicine for her, you buy it from Bront on a weekday and then visit Jasmine room in the morning. That should progress the story.