Make sure you put your complaints in writing then email to her and also her boss or owner and keep a copy for your landlord when he comes. Also mention you asked if everything was OK and you had mentioned the lawns were not done due to weather & was told you had passed. Pick her up on her lies.
In the letter quote your rights with the section from the tenancy act. Then let them know if this happens again you will be taking it further as their inspections are against the tenancy act.