2nd, you could counsel your sponsor and advise her what she needs to do for her sobriety and well being, but I wouldn't advise that at this point.
If she gives you her time and her help freely and is generally available to you, maybe the best tactic is to keep taking that help and let her figure out on her own what's best for her sobriety.
You could make the point obliquely by saying 'sure am glad I have a sponsor, EVERYbody should have a sponsor like I have' the next time she blows her evening helping you.