Hahaha, 0 successes on 14 dice is horrible. Ouch!
Minor correction on Grid Hopping from page 240 of SR5:
"Using Hack on the Fly to hop grids unsuccessfully doesn’t alert the grid or its demiGOD the way most unsuccessful Sleaze actions do."
You are right that the sleaze action would kick off Overwatch, and with a failure on the very first step you might as well reboot.
Couple of comments on hacking in general for your reference:
In order to access the grid she has to roll against 4 dice for a local grid; any hits are added to her Overwatch Score (which is important for you to keep track of).
Getting on the grid itself technically isn't enough unless that information is entirely public, and even then it'd probably be protected by a host. In that case, she'd have to sleaze a MARK on the host by either attacking the host directly or finding a device she could plug into to bypass the host ratings. If she went up against the host directly she would be rolling against Host Rating + Firewall. Assuming a Rating 4 host, for example (low-end commercial, private business), the host would be configured with an ASDF score of 4 through 7, likely focusing on Data Processing and Firewall, so A4, S5, D6, and F7, for a total of 4+7 dice. If the host was a local corporate host instead, the guideline is rating 7 to 8 which means a dice pool of 7+10 dice. Understandably, hosts can be pretty nasty.
Getting the MARK would allow her to enter the host, at which point Patrol IC would likely get a chance to spot her (Data Trails page 86 has a great reference on Patrol IC). In the case of IC they always roll Host Rating x 2, which in this case could be 8 or 14 dice, by the above examples.
Once inside, it'd probably be a Matrix Search test, not a Matrix Perception test to find the relevant files. Makes for the same dice, as both use Computer + Intuition, but the time frames are slightly different. Assuming she's running the Browse program, you'd only be looking at a 30 second interval with a threshold of 1, with additional hits used to reduce time. Then, you're right on the money with the copy file test, assuming the files aren't protected (which they probably wouldn't be).
That all being said, that's just for reference. Nothing wrong with handwaving a bunch of rolls like this.
Do we have any info on the 9th and 10th floors? I could have sworn Newhaven was described as a ten story building.