There's three "paths" with her (I always get the naming wrong): 1) Hate route; 2) reconciliatory route; and 3) neutral, neither 1 or 3. The hate and reconciliatory route have a number of unique scenes for each.
The hate one is pretty self-explanatory and pretty easy to get onto. It looks to have a fixed hard stop at a certain point the night you have dinner with her that is hard to miss. It's a route I've mostly skipped over as the path looks to have a hard end.
The reconciliatory route has a number of unique scenes or altered conversations. She can be invited to the initial investor party with conversations that are a bit different depending on how you want to handle her route. She can also be invited to the printer conference which has a number of unique scenes and conversations. She'll also invite you over to the house for dinner, and you can eat and spend time reminiscing with her, and even leave a nice note the next morning. There are several other more minor scenes such as conversations while driving her, offering to take her back home after meeting the Doctor, and more. Some are locked behind the relationship point thresholds and choices in earlier scenes.
If by not having a route, means no lewd scenes, then you are correct. You can peek at her masturbating in the shower at the conference.