What would you do?

Hey ladies I’ve been struggling with a moral dilemma of sorts so I’m coming here for advice. I work at a restaurant and one of my coworkers is an older women who has been there for a few years, we are going to call her Sharon. We recently got new management in the restaurant and the new manager doesn’t really like Sharon for a few reasons. Sharon being older is a little slower than most of us (but we are in our 20s this lady is in her 70s) and Sharon has also lately seems to be conveniently forgetting things she needed to do, or just lying about doing small tasks so she can go home. I’m not going to lie, we all sort of do that sometimes because we are expected to do a lot of work but she’s getting caught doing it while the rest of us don’t because we do it less often. But anyway we (my other coworkers and I) believe the new manager is trying to get her fired and Sharon has no idea. I’ve been struggling with if I should tell Sharon or not. I want to tell her just because she’s old and losing this job will really effect her financially, as she has medical bills, and lives alone with no help of anyone else and I know she’s not in a good financial place right now because she got really sick this year and was out of work for a while. But at the same time I don’t want to tell her because she might not get fired and I also don’t want to get myself in trouble if she gets upset and tells people what I told her. What would you do?