Vickabee,
Please make sure that you get your daughter to the er right away if she has sudden pain on the side where the cyst is; I too had a cyst one my ovary when I was 14 that we didn't know about, it ended up bursting and inflaming my appendix which had to be removed.
I wouldn't want her to go through that pain, she's been through enough already.
Blessings and peace,
Judy