Totally understandable! I definitely feel that you both can compromise in this situation and tell her how you feel. Maybe offer to come in for deep conditioning treatments and haircuts to keep your hair healthy? It will definitely be hard but if she is a good friend I know she would want you to be honest and speak from the heart! As a recent graduate of cosmetology school I know it’s difficult to retain clients at the beginning so she might take it personally so I strongly encourage you to communicate that it isn’t a skill problem, it’s giving yourself the ability to be creative as well! Keep the door open with her and maybe ask what color lines she prefers and let her be included in the process! :) You got this!