#2. To make Becky an even bigger underdog

Becky Lynch is the babyface going into WrestleMania, the clear babyface following Ronda Rousey's sort of heel turn. Booking an injured Becky against Charlotte could be WWE's way of getting more sympathy on her but in my opinion.
Rousey brutalized Becky Lynch at the end of WWE RAW and now she has a truly uphill battle ahead of her at WrestleMania.
One wrong move ended his WWE career - Watch Now!
#1. Stephanie has special plans for Fastlane

If you notice what Stephanie McMahon told Charlie Caruso shortly after announcing Becky Lynch's suspension being lifted, she mentioned that Lynch would have to sign a Hold Harmless Agreement before her match at Fastlane.
This makes me think that Stephanie McMahon could be orchestrating something for Fastlane. Don't be surprised if Stephanie gets a few members of the women's division together to lay Becky out and 'make sure she can't compete' at WrestleMania.
These WWE moments were totally off-script - Check now!