This is Bess. Note her smooth look and the broad white band around her head.
Let's have another recap on these females in Box2.
This is Spikey. This is not such a helpful picture but does show her spike (but you have to look closely) and the blue-black speckles on her cheeks.
This is Jane. The top of her head is rougher and in particular, she has two white patches where her external ears would be if bluetits had them!
Spikey again. You can clearly see her spike and observe that her white band is thinner than that of Bess.
Another picture of Jane. Her head feathers really look a bit of a mess!
Back to Bess. She really is the most elegant of the three and her wide white band shows up clearly here.
Another shot of Bess.
A picture of what these females have been hiding all day - four eggs! But whose are they?
Finally, one of our three is roosting in the nest box. It is not Jane but it is not clear to me whether it is Bess or Spikey.
I hope I have convinced you that we have three females in Box2!