Whoa, no! Get OFF the crazy train here, Rosa didn't know anything about Stayle's Mom dying in the game timeline. If you use a LITTLE bit of logic, you'd see that. If Rosa had seen visions of a young Stayle, she WOULD NOT have adopted him. At the worst, Rosa saw visions where Stayle was older, but he would not have been the focus of the vision (Pryde would), and chances are, she wouldn't recognize him as the older form of a child she hadn't even met yet.
Remember that Rosa stopped having visions of Pryde and the game timeline when Pryde's precognition awakened. Which was like a month before they found and adopted Stayle.
To be fair though (considering I hate Albert a LOT more than Rosa), he DID try to talk Rosa into visiting Pryde more often.
Honestly her mom is high key annoying to me. Like if you had a vision where your daughter wasn’t going to be fit to be queen instead of just avoiding her why not trying to take her under your wing and try to fix the problem and then give up like???? It do not make sense to me... like she never even tried to be there for pryde she just saw her visions and was like okay guess I’ll lay down and take it like a bitch