Dont fall into the trap of only briefly shooting the weapon at a practice range to decide. If you do, it's kinda like making the choice to marry someone with only a few perfectly staged dates to base your opionions on - it doesnt tell you much about what it will be like to actually live with her ....
While she may like the feel of shooting one particular weapon over another at the target range, that is not going to be the full ownership cycle she should consider as a balanced criteria for the purchase,
Make sure she is fully aware and comfortable with all the factors that will be involved such as:
- usage: carry vs left at home - that will impace size and weight criteria
- 'panic mode' comfort with the weapon i.e, does she fully understand it's pre-fire prep and can do so 'automatically' if the time ever comes - that may point to a revolver or auto as the basis of the platform
- maintainace of the weapon - can she field strip it, clean it?
- cost of operation, is practice ammo costs going to be any factor in the decision
- purchase cost - there are a lot of choices out there, some are very good values, some are very costly. be sure to establish a budget then research option thoruoughly within that price point.
Unless she is going to become a sport shooter, this purchase will most likely be her single weapon and therefore should attempt to be the best fit for her in all aspects, so I would treat this the same way I would if I was buying her a hunk of jewelry, just because I think it is pretty doenst mean she will, so be safe an fully inolve her in purchase decision, but also make sure she is aware of all the points above.