I want a low velocity hollow point because from what I've read, that is the best bullet type for the .38 Spl for self defense.
I fear you have read wrong.
A common brand standard pressure load may not develop enough velocity to expand a hollowpoint bullet, especially if jacketed.
If you have a real deal Model 10 made since 1957, it is "rated" for use with +P ammunition. If it is a "pre model 10" made before cylinders were heat treated in the 1920s, then you might reasonably be cautious about what you put in it.
Buffalo Bore may be different. They list a gas checked 158 gr hollowpoint at 850 fps from a 2" or 1000 fps from a 4" barrel at standard chamber pressure.
This is hotter than most name brand +P.
That is good in terms of terminal ballistics, it will hit hard and open the soft lead hollowpoint.
HOWEVER, it is not going to kick any less than any other load of the same velocity just because it is not at +P pressure, which is only 10% over standard. This might well make them uncomfortable for your girlfriend. For her, I suggest name brand 158 gr lead hollowpoint. If that is unmanageable you will probably have to drop down to midrange wadcutters, a 148 at 750 fps.