This is not good for a team leader, specifically when her boss invovled directly with her team. Understandably she has personal issues bothering her. It seems actually your relationship with her is not too bad. Talk to her. You made her change once. She might do it again. Prepare one or two solid cases that you effectively communicated with other team members on projects or team work. Let her know you will work with her and pay more attention to those typos (she knows everyone does that), but tell her it does not deserve a 2. In my opinion, 2 typically means one could not effectively communiate and it has significant impacts to the work with others. For you, that is definitely not the case.
If she insists, (I doubt it if you point out solid cases of your effective communication and clearly state what 2 means for the review), then you talk to her boss. You have been there for 10 years and I have the feeling you are generally welcomed by the company. When things get to that level, it is not her advantage as she already gave impression to her boss (or HR) that she could not handle her team well. She might be the one got fired.
