Keep us posted on her pleaseI can't thank you both enough for your help in reassuring me and advising me.
I will be changing the bulb in five months as I always do - I have dropped the bulb to around 6 inches away from her and also centralised it more to where she lays.
I removed anything she could fall off for now due to the balance issue and have bought a new calcium which contains D3 and will give her that once per day five times a week as advised!