Hi Joe and Graham.
What you say is good advice and you have much more knowlege than me so its probably the right advice. But to my way of thinking the right time to apply for her daughter to come to the UK was at the time the spouse visa was applied for. I was fortunate to be able to do that. For whatever reason Kalbo was not.
Kalbo must be close to applying for ILR so having that shows commitent to a future here in the UK. And to my mind it would be a very hard hearted person at the UKBA who would refuse an application to let her daughter join her after such a commitment to this country purely on the gounds of sole responsibilty. Surely they are more likely to be inquisitive if an application was made whilst still on spouse visa.