Replying to Help please

damn i just dislocated my shoulder on a rail today, i went to the er and got it all fixed, x rays said that nothing happened really. so the doctor told me to wer this annoying ass sling for a week then go see an orthopedic to get cleared in a week, so i was happy, i would be able to ski in another two weeks... so my mom shows up to the hospital and shit and as were going home i tell her that ill be fine in two weeks and that i cant wait to ski again... she looks at me and tells me that im done sking in the park, and that she cant trust me going alone with my friends anymore.. so i guess im like grounded from sking.. idk what to do, im pissed off.. i guess i kinda deserve it because i did screw up but she cant take sking away from me... has this happened to any of you guys? idk what to do to convince my parents to let me ski again.. help please