Help my friend with her strange board

Her board is 7.1", three fin with a big centre fin. Board is quite wide and is a bit like a fish. Not rounded nose and with a wing tail. I don't know what is the volume as she just bought it from a random person. The board definitely looks very cool but I've never seen a board like that, especially with that tail. I'll try and ask for a photo.
She is in her late 30's, 47kg, physically fit and sporty. Probably around 155cm tall so I think she is struggling to paddle with wide board. She surfed for a few years but not often. Only started surfing every weekend since a few months ago. Just white wash and small green wave. I was helping her out and I can see that her stance is good. She can definitely catch green waves by herself but just lacks the confidence. She does have a bad habit that she does a two step popup process using her knees. So sometimes she ends up not popping up in time and ends up in white wash.
I'm probably not the best person to give her advise, but I told her to get rid of that board. I've told her to try a 7"6 Torq board or something similar size. She is on tight budget so she doesn't want to spend too much.
Should I ask her to go for something else?
She is in her late 30's, 47kg, physically fit and sporty. Probably around 155cm tall so I think she is struggling to paddle with wide board. She surfed for a few years but not often. Only started surfing every weekend since a few months ago. Just white wash and small green wave. I was helping her out and I can see that her stance is good. She can definitely catch green waves by herself but just lacks the confidence. She does have a bad habit that she does a two step popup process using her knees. So sometimes she ends up not popping up in time and ends up in white wash.
I'm probably not the best person to give her advise, but I told her to get rid of that board. I've told her to try a 7"6 Torq board or something similar size. She is on tight budget so she doesn't want to spend too much.
Should I ask her to go for something else?