I don't think she will have a problem. My little sister is almost 11 years old and she has the same problem, it is just something that she has come to accept and goes with it. If she has a sleepover or something she just changes in the bathroom at night and in the morning, and her friends really don't know. I also had the same problem when I was little, until I was 13 actually. When I was little we didn't have pull-ups so I either had a good night or had to change evrything in the morning. My younger sister would tell everyone but I just said that she diudn't know what she was talking about and since she was younger, and I never gave people a reason not to believe me, they didn't question it. She will eventually out grow this, everyone in my family has so far, and as long as you let her know that it is not her fault she should be confident enough in herself not to let it bother her.
There are also different medications that they have that is supposed to help with the problem. I used some kind of nose drops that worked amazingly well when I was little. My sister has a pill that she takes. Just another thought. Good luck.