Thanks for sharing your concern.
Need not worry at all.you can ask her to do mild saline rinse before she goes to bed.
at this age you can expect erupting,her permanent premolars.this premolars come in position of previous baby molars.
therefore the bulge and piece of flesh could be due to that.
there is nothing to worry here at all,but since you have decided to visit your dentist
you can do so and get an routine oral checkup done.
hope i have answered your query.