Sony DSC-H9/B (B for Black Model) can connect directly to PC. The SD/Micro-SD card -- Sony called it "Memory Stick Pro Duo" -- is compatible with and easily read/recognized/written to by any computer, including Windows XP, back in that day.
H9/H7 workings were similar enough that they shared
this manual.
She could have done this a bazillion ways and I believe that she probably did copy the images. She may have copies of these images any number of places, included uploaded and unshared. Do her ex-boyfriends have them? Were/are they hidden in the rental car(s)?
Again, I believe that the existence of copies of these and heretofore publicly unseen images is highly likely given her admitted penchant for archiving photos from her phone, cameras, etc.