The stem is 90. I mean, I don’t think handling will suffer too much if you swap that for a 70, as it’s a stable bike with a long wheelbase. I can tell you I feel very upright on it after my road bike, but I guess your partner should try it for the fit, might as well work.
potentially interested for my partner, do you think it would fit someone around 5'6 if put a super short stem on it? Thanks