ANSWER – The ability to look into the future is in most people to a certain extent. How many times have you thought about a friend only for them to ring you later the same day? We are all clued into the world in ways we do not yet understand. It is a part of what it is to be human.
This ability to glean knowledge of the as yet unknown, including the ability to see into the future is often referred to as clairvoyance or having a sixth sense. Our five developed physical senses (taste, smell, sight, sound and touch) allow us to perceive the world directly. Our final sense, perhaps closely aligned with the concept of intuition follows a less direct path and isn’t fully understood. Nevertheless given the number of people who experience it, it would be nonsensical to claim this sense doesn’t exist.
Clairvoyance can either be an innate or a developed sense. This is as true for witches as it is for anybody else. Deliberate attempts to develop clairvoyance can be seen in the art of divination and using structure and meditative techniques to access esoteric knowledge.
Equally though there are people who make no formal attempt at divination and who simply appear to be blessed with the gift of forethought. This is, I imagine, the closest definition to your mother.
There is often some confusion between the ability to foretell the future (sometimes termed as prophesising) and witchcraft. The two are often considered to be the same thing but, although there is some overlap, they are actually very different things indeed. Many witches will cheerfully acknowledge they have no ability to prophesise and indeed may even argue such a skill would be irrelevant anyway as the craft tends to place more of an emphasis on manipulating the future rather than trying to determine what future is set in place.
In your specific case I think it is likely your mother has the gift of clairvoyance to a greater extent than most.
This isn’t something to be feared or embraced, it’s simply another part to the mother you love. She may well find it comes in handy at times and she may well find it brings her grief at times. If she wants to explore it then tools such as the Tarot or the Runestones may help her to heighten her natural abilities. You/she are welcome to look at the information on both that we host on the site.