I don't think the case on the signage is very strong. To get to the bus lane camera, she would have past first this sign (https://goo.gl/maps/ETHaFheSUvLBnLu9A) and then this sign (https://goo.gl/maps/NpfAy8cf5vZyJjEW6) and your photos indicate those signs are still in place.
The markings are faded but still good enough for most adjudicators I suspect.
However I have a trick up my sleeve which might work, and if not we should at least get the £65 discount reoffered.
Dear London Borough of Ealing,
I challenge liability for PCN EA58358915 on the basis that the alleged contravention did not occur. I say this because the sign at the start of the bus lane is bent towards the pavement and would not have been visible, see the location here: (link to be sent separately)
In light of this, please would you cancel the PCN.
Yours faithfully,
Just to confirm, you must not click on the arp4.short.gy link I am going to send you to put in the representations.
Response from the council:
Your request has been assessed and the following information is provided in response:
A LaneWatch MK3 unit is at this location.