This one is needing more P and K.... and since your pH pen is broken, am concerned the pH levels you're estimating are not correct, at least not for her. If the pH goes out of a good range, the plant can't absorb the nutrients it's being given ... so find SOME way of getting at least a good guesstimate of the pH and make sure it's between 6.0 and 6.5 ...
Good luck!