Bella has three routes (becauae she the best damn AVN girl of all time).
1. Romance.
2. Sub Love
3. Sub Asshole.
The only slightly difficult one to grab is the sub love route. Do use the pdf (mods will not always show you what you want and are at the mercy of what the mod author thinks is best).
https://f95zone.to/threads/sisterly-lust-v1-1-11-perverteer.6547/post-12321299
As for normal romance with her (or her alone), not actually sure how you managed to not get on it in all honesty. There are a few unwittingly simple decisions for the other girls that actually put you on their routes, so watch out for those.
