Hi. My dd is 10 and has become increasingly anxious over the last few months. It is largely centred around me,she thinks im going to die or leave her and hates me going out which I dont do often.
So as not to drip feed,me her father split up 9 yrs ago,he sees her but only once a week and this has been largely pushed by me as he was erratic initially.He has 2 new dd's with his partner who she adores.
I am also remarried and have been with him for 6 yrs.He is a lovely man,very family oriented and has put lots of time into building a relationship with her despite the fact she spends most of her time putting him down and being nasty.
We have a little girl of 19month who was dd1's dream come true. All of these things have not seemed to have affected her so far and i feel we have handeled very sensitively. eg I took her on holiday for a week with just me 4 months after dds was born.
So the anxiety started with getting panicky if i was too long if I popped out day or night,checking where I would be when at school etc.She then went to not even wanting to stay in the car whilst I pay for petrol.
She started to call a lot at night after she is put to bed. I settle her and she seems fine although checks im not going out and where ill be,this went on to asking me to have the tv on loud,leave doors open and use a baby monitor 
It has got so bad now that she calls from 9 untill midnight. Where are you?I cant hear you,you wont leave me will you?What are you doing?Are you in bed? and my favourite "are you asleep?" when i am.
We have tried reassurance and talking to her,audio books,lavender,later and earlier bedtimes.She does lots of activities and takes part in sports and stuff at school so very active.
Last night was horrendous and yet she got up this morning as if nothing has happened. We are exhausted as get absolutley no rest from it and she has woken the baby a few times.
I hate to admit it but last night i felt as if i was losing my patience and began to think it maybe some sort of power game.At 11pm she was shouting down for me to say goodnight but I told her I had already said that and asked her to go back to bed,not sure if that was petty but i just felt it was another excuse to call down.
Any experiences or advice would be great. Dh is on lates for the next 4 nights and I am dreading it.