Having read your posts here and on the other thread, Oh Sweet Lord you mother is a total pain in the arse! That you are even considering that you are a bad daughter shows she's really done a number on you.
You are in no way at fault here. Your mother is at fault in every way imaginable. She made a crap decision to retire to Spain, with apparently no thought to the practicalities/finances, and she imposes herself on you and your family with, again, no thought as to the practicalities/finances/emotional cost of her actions. She's a selfish manipulative user of people, and she treats you like staff. Worse than staff, she expects you to pay to be her staff. Selfish, selfish, selfish woman!
The main problem, as I see it, is that you are struggling to deal with the lifelong training she subjected you to, to put her first and dance to her tune. You know, logically, that she is in the wrong and that you should tell her so. But you feel you cannot do so - classic FOG - Fear, Obligation, Guilt. You can find a lot of information on this online, I suggest you read up on it a bit. And maybe consider counselling to get past it. Expensive, but probably cheaper than continuing to put your business on hold every time she's over and you have to turn your office into a bedroom for her.
As to this particular incident - of course you shouldn't have invited her! What a totally stupid idea, that you should have. And she knows it. Phoning you at 7am - just to ram home how bad she wants you to feel about it, and for the whole day to be ruined for you. That's beyond selfish and meandering towards downright evil.
You need to stop giving this any headspace. Use the free time from Skype/Facetime to read up on FOG. You need to prise her off your life, she's strangling it. Your brother and his wife have already broken free. it's time for you to do the same thing. She's a nasty piece of work and you don't deserve this.