u/Adventurous-Alps-436

My partner is starting to learn to drive soon and we've been lucky enough to have be given a small car for her (Twingo). I've been driving 13+ years but she'll be starting off on a provisional, i have my own car. Would it be better to have her own insurance for it? or would it be better to have Multi-Car insurance? (We would like to start building her NCD asap) She'll also be the one driving her car the most (I'll be passenger)