I'm doing a bit of a historian of medicine cringe at that set-up - I'm not sure somebody who was learning herbal practice from her father would want (or be encouraged by him!) to train in conventional medicine as it was at the time (bleeding for pretty much everything, massive doses of mercury and other toxic substances ditto, etc etc, one of the few effective things they could do was vaccination and somebody who was into herbalism was probably anti-that). I think she could probably have had a perfectly viable alternative practice. (Especially as this must be well before the 1858 Medical Act!)