I really do not know that much about Linehan, but in reading the interview transcript with her, she stresses that her contribution was to combine mindfulness (acceptance) with the desire, and tools, to change. Some advocates of mindfulness, or at least meditation, seem to promote acceptance of everything as it is, and no attempt to make any changes. Just agree with whatever is. She does not find that useful. She used an example of someone with extreme skin burns, in agony, not finding it particularly useful to just tell the person to "accept" the horrible suffering. Doing something to try to reduce the pain and to replace the damaged skin is also necessary.