based on the joint on the first cue, I say inexpensive. the second cue I believe it is something like Bellville, cheap import. The jump cue I cannot make out what is says, but it may be the best of the lot. Maybe custom.
The value depends on if she has the 3 ball set or if she has the complete 16 ball set. You would need to post photos to verify ivory as I have come across many pool balls advertised as ivory, but were not.
Is the shaft original to the cue? I see the shaft does not have threads for a while. How far down in the shaft before the threads start? Looks like a short pin, maybe only a few threads at the end of the pin are actually holding it on.
i think a number of us know where this cue is. that being said, there is another thread on here about the same cue. most likely Martin or Schrager. If you have good eyes there is engraving in the rings, if you can make out what it says