I think there's a couple of bugs in the calculation of Grynyth's RP with relation to Janine's quest.
Firstly, the calculator looks like it's granting +5 to Grynyth RP for completing Janine's wedding portrait, but the event code is only granting +1 Grynyth.
Secondly, if Janine's wedding portrait is completed before the Incubus war, then I think the calculator is including the RP granted by that event in the calculation of Grynyth's initial RP, but in the game code (the relevant event is in the Twisted Glen), her initial RP is set to 20, which overwrites the value from Janine's quest.
I believe this second issue also happens with Ivala's RP, as per a recent bug report from WaxerRed (link below), and Sierra has stated that she doesn't plan to fix it, although I don't know if she'll respond differently now that I've mentioned that Grynyth is also affected.
https://www.patreon.com/posts/tls-art-preview-84150150
edit: SL has responded to my reply on WaxerRed's comment, and I think she's indicated that she will fix this issue for at least Grynyth. It's unclear if she's sticking to leaving Ivala's calculation as-is.