Hello Scotty,
My friend says her car won't go past 40 mph and that her RPMs go up like crazy. I'm thinking this is a transmission issue, but I'm far from a car expert. I don't know if this is enough information for you to diagnose the issue or not.

yes, transmissions slipping do just that, pray it's just low on fluid cause that can do it too.

Ok. Thank you Scotty. She took it to the mechanic this morning, but hopefully it's just the fluid and not the whole transmission.