It's true Rai Rai is Sarahs Rival and to a lesser extent Sarah is Rai Rai's rival it's normal for some Sister's to compete.
And allthough It may seem like Rai will draw the line with the MC about Sarah.
With Rai being so persuasive about the MC being the stripper (I can't really imagine how thats good security).
Seems to me its more a case of hey look what I got Sis bet you'd like some of that.
1,0 to Rai move But I tend to disagree.
There is another slightly lesser known thing between Sister's called Sisterly Love.
And if Rai is willing to ask Ryker to make her Mom happy just to see her Mom well Happy.
(Was gonna put that in Inline Spoiler but then thought not really a Spoiler.
As we all know it was gonna happen sometime).
Then why wouldn't she ask Ryker to stop her sister from making a mistake and marrying dick head.
If all it's really gonna take is a Bun in her Sister's Oven and when she already suspects.
That her Sister isn't even fussed who the baker is.
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Thats my personal wet dre... erm opinion anyway.
Just Sayin.