As a girl that wouldn't bother me unless she had a lot of dirt under her fingernails. At least in the picture her fingernails are trimmed down and look nice. They just aren't painted. It is cool to see a girl with painted toenails/fingernails cause it just shows how much you take care of yourself. If you seen someone with really long toenails you'd probably think they don't shower or something since clipping your toenails is an easy thing to do. I knew a guy that thought nail polish was a turn off and he didn't like when girls would wear it. I found that odd.
to be honest with u, it bothers me slightly when a guy has ugly nails that look like they've been bitten and chewed everywhere or never cleaned... so i wouldn't blame them if they felt ours were ugly. i believe that as long as they are trimmed and clean then there's no worries. short nails dont equate to ugliness. especially with the first pic u showed. her nail shape is just that way, she can't actually change it. even if they were to grow long, they'd never look like the second picture.