Welcome! The first two guns you mentioned are DAO J frames; the 67-5 (if that is what you meant) is a K frame and SA/DA.
If possible, before buying you may want your lady friend to try several guns at a dealer or range. A DAO revolver will probably have a trigger weight in the high upper single digits in pounds, but if she is unable to cycle the gun, the number is irrelevant. If so she may be better off with a handgun made with lighter springs, like a .380 or 9 Shield EZ or even (gasp!) a .22. Hope this is helpful.
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Alan
SWCA LM 2023, SWHF 220
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