My wife got mugged as a young woman. To this day she has occasional nightmares related to being mugged. What would happen if I grabbed her while she was having a nightmare? She’d probably thank me for bringing her back to reality, right?
More likely she would scream loudly enough to wake the dead, then die herself of a heart attack. So I generally nudge her with my foot just hard enough to wake her up. The next day she’ll describe the dream in all its detail. My wife looks for meaning in her dreams.
Except for that stupid rabbit dream I can never remember mine.