Wow. DD's coach/gym owner would have shown that mom the door!
I agree with the other posters who have said if she can safely do A bar routine at the meet--whether the skills are there or not--let her compete 5. We have some CGM's at DD's gym who say they don't care about scores, but then they go to a meet and see what the coach meant by a 'low' score and they decide it's best for their daughter to stay where she is at but repeat that level the next season.
If this is a gymnast who only did 'mediocre' at new L4, she will be killed at 5, especially on bars. DD has always done well on bars (mid-9s), but she had a teammate who scored mid to high 9s at new 4 and only scored high 8s at 5...It was quite a shock to her (and her parents!)...
I'm not a coach, but I would say based on the info in your OP, this kiddo is probably looking at 5s or 6s (depending on your state)....If I remember the L5 deductions correctly (and someone can correct me if I am mis-remembering), no flyaway is at least a .8 (if not more), no clear hip is also at least a .8 (if not more), no casts above horizontal would be .3 for each (since there are 2, that would be .6). And no baby giant, which is also in the realm of a .8 deduction. You haven't said what her amplitude looks like on her swings, but I'm guessing it's nonexistent, so that would also be .3 for EACH swing (and if you have judges like we do, it's .3 on the front and .3 on the back parts of the swing, so .6 for each swing!).
Soo...by my math, she's looking at a high of maybe mid-to-high 6s, if everything else is executed perfectly....Have you sat down with CGM and told her just how low the scores can go? I've seen girls get 1s on bars because they've not had any of the skills and the elements they did do were done so poorly they got very little credit for them...