I suggest a little research first, perhaps by both of you:
SLR Camera Lenses ? SLR Lenses Explained Choosing a Lens: camera lenses explained - What Digital Camera Recommended Pentax Gear 2016 - Gear Guides | PentaxForums.com
___________________________________
it might be good to review she has to start with:
the in depth review of the camera she has ( which I also have )
Pentax K-3 Review - Introduction | PentaxForums.com Reviews
and the in depth review of lens she has ( which I also have )
Pentax 50mm Prime Lens Shootout Review - Introduction | PentaxForums.com Reviews
[ you can review different cameras and lenses by looking under " cameras " and " lenses " above ]
_______________________________________
you should realize that the camera has a "cropped filter " - APS-C - not a " full frame " filter
this does not limit your choice of lens but it does alter the " field of view " the lens provides ( not the focal length ) the simplest way I can explain is this:
cropped vs full frame sensor - Bing
there is nothing wrong with that decision a lot of us only use cropped sensor cameras.
the only thing to realize is that a photo taken by a 50 mm lens used on a cropped filter does not get you the exact same photo as you would get if you used a full frame camera using that lens all other things being equal
____________________________________________________________________
" kit lenses " are generally less expense but servable lenses often sold in combination with camera bodies and are an ok starting point if you can't afford new " better " lenses
Remember that numerous people have never gone " beyond " a kit lens and that " kit lenses " have taken fantastic photos
__________________________________________________________________________________________
when you have found what lens ( or lenses ) you are looking for, remember to check out the Market Place here
I have gotten some excellent lenses from other members
---------- Post added 11-19-17 at 06:28 ----------
Originally posted by Kevin B123 Hi,
. . . There are two good standard kit zooms that are commonly recommended, the DA 18-135mm WR and the DA 16-85 WR (there are lots of other letters in the full titles).
Both have an internal motor so are much more quiiet than the prime she has, then there are also 'fast' zooms on and off brand.
Good luck hunting.
not sure I would call the DA 16 - 85 WR a kit lens