I've been struggling with an OWC SSD on a MacBook retina 2010. First one crapped out, replaced by OWC for the cost of return postage. Second one has been causing intermittent freezing and grey screen, may be the OS is corrupted but my confidence in SSD's has been shaken. That's a £400 ssd. So far no problems with Samsung units in another computer.
Try a smaller size if you can and make sure she has time machine backups (everyone should, all the time).
I've been struggling with an OWC SSD on a MacBook retina 2010. First one crapped out, replaced by OWC for the cost of return postage. Second one has been causing intermittent freezing and grey screen, may be the OS is corrupted but my confidence in SSD's has been shaken. That's a £400 ssd. So far no problems with Samsung units in another computer.
Try a smaller size if you can and make sure she has time machine backups (everyone should, all the time).