Hi SlimLizzy,
I have absolutely no personal experience here, but I have spent some time looking around the Forum about haltingg the LCHF weight loss phase.
If you are on 100grans of carbs per day, you are nowhere near ultra low, so may need to be careful about adding more carbs to gain weight/stop weight loss. Thus the choices are : increase protein, increase fat , or some of both.
There is a thread about Women (of menopausal age) finding it harder to lose weight on a LCHF diet. In there is a link to a Podcast by 'the fat emperor' about how women to whom that applies should probably go more Low Carb High Protein than Low Carb High Fat.