Hilda is very private about what her magic is. She does not openly share what her magic is and if pushed will be particularly vague, coy, and may outright lie about it.
Strings of Fate
Everything has a string that takes it from it's previous path it was on to it's current and on into the future. People, places, things as well as past, present and future are all connected by these invisible framework of complex threads. Those that can see them on into the future have the gift of foresight. Hilda does not have Foresight however she can see the threads of present into past. It's easiest to see the threads of people, and she can really only recognize the threads of those that she is familiar with.
She can see how people are connected by these threads by seeing where someone has been and in real time. She can follow someone's path where they have been, those whom's path they have crossed and what items they have interacted with. Tracking down the thread of someone by their thread by foot or even on horseback however will take significant time. Especially since that thread has to be followed from present to past.
Accelerating her view on the thread is something she can do magically tracing it from where she is however there are differing levels of toll. To trace someone a few hours out (2-3) can be done with minimal to no effort and she can see where they have been within the last 2-3 hours. To trace someone a 2-3 days out takes a physical toll and will cause dizzyness. Adding what items they interacted with increases that toll.
Accelerating out 1-2 weeks will cause mental fatigue, confusion, physical exhaustion, and she will be in a state somewhere between barely concious and passed out. Adding item interaction means she will be barely coherant at all, as if she's drunk or high in a dangerous state.
A month or longer will cause her to pass out and may take multiple sessions and be dangerous. To track people she wouldn't know or to go longer than a month would require divine support for that session.
Once the thread is experienced or followed she can create a map of where that person has been and roughly how long they spent in each area. She does not know the contents of the why, what was done, or discussed.