Ok, so. Its an attention thing then? It sounds like that's what you are thinking and you're probably right.
What you need to do is recondition your dog to be away from you. What do you do when she poops in front of you, or `deliberately' as you say. Do you make a fuss? Do you scold her? Do you pay it (and her) immediate attention and rush around to clean it up?
If so, stop. Right away. The poop should mean nothing to you. If necessary, walk around it, step over it - pay it no mind than you would a speck of dust on the floor. It does not exist. Each time you make a fuss or scold her you are reinforcing her belief that it gets your attention - which it does. Therefore she will keep on doing it.
What you need to do is one of two things.
Either, you see her doing a poop inside, so she instantly goes outside by herself for some time-out. Not for longer than it takes you to clean it up. She will soon learn to associate pooping inside with getting put outside alone. That'll snap her out of it pretty fast.
Or, second option, if you can't catch her in the act, you ignore it and her, and when she finally stops looking for your attention you clean it up and act as if nothing has happened. NEVER let her see you clean it up, NEVER make a fuss, and NEVER acknowledge it.
In addition to this, whenever she poops outside, make a HUGE fuss, treats, playtime, throw her a ball, big cuddles. Dogs are opportunists and at the moment if she is doing it for attention, and she's getting attention, she ain't gonna stop. Don't forget - even a scolding is attention to a dog. Shut her out, ignore - no eye contact, no speaking, not a sound, and she'll quickly stop.
Now, as an aside, are you sure this is just behavioural? I would take her to the vet for a quick check-up, too. Often a change in potty habit is a sign of some kind of physical disturbance.
And lastly, if you think you're not spending enough time with her then spend more. If you think you are spending enough time with her and she's demanding more, then stop. Don't pander to her, or it'll just get worse. She should be away from you for small periods of time when you are home (and your Mum, too) so she gets used to being alone and learns she can't demand your attention all the time.
Good luck!