**I read your Edit:
SHE is saying what is wrong and how she feels. Don't make her feel bad for that. She is being honest... and OPEN with you. Cherish that. Nurture that. A child needs to know they can tell their Mom ANYTHING and about their worries.
Next: she is scared. That is normal. Let her be nearer to you in the loft or in your room on the kids bed.
It will not last forever. She will grow out of it.
Again, she has a TON of changes in her life too... and she is only a child. One day, she will not need you that way.
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Okay... she is undergoing a TON of changes in her life now. And you have a new Husband. Major changes for her.
Her sleeping with you previously is not a big deal. LOTS of kids do that.
No biggie.
AND kids this age, DO get night time 'fears' and anxiety. It is developmental based. NORMAL.
Also, how your new Husband handles this, will affect her too... so I HOPE your new Husband is child friendly... and caring... soothing.
For us personally, we have a floor futon in our room, for when the kids 'need' to be near us or if they are sick etc. It is NO biggie to us.
In some cultures, it is commonplace.
And yes, SHE is on a different level of the home for sleeping. I would not like that either.
Ultimately... her being attached to you is fine. YOU are her Mom. Her life has changed. She has lots of things to adjust to too and a new "Man' in her life too, and a new house and a new set of expectations... per your new Husband... and well, any kid, would get anxious about that.
Again, night time 'fears' in a child is common at this age and younger and older. It is developmental. My daughter is 7... and she still sometimes gets afraid of the dark and night time. Fine. No biggie.
If you have her in the loft.... can you perhaps put up some curtains on a rod... to make a 'door' like appearance on the entry to that area???? Or get a folding panels screen type thing... to provide a boundary to the area and make it cozier????
Next, your new Hubby does not know about kids. Do not second guess yourself in conjunction with him, and how to comfort or parent your daughter. Your daughter is normal. He... would need to learn about 'parenting' too.....
Next: when I was that age and younger... I was like your daughter. In the middle of the night, I would wake. I would then creep down our LONG DARK hallway, to go to my parents room. I would squeeze in between them to sleep. They let me. I grew out of it. I simply was 'scared' at night and 'missed' them. NO biggie.
It was and is... one of my FONDEST memories from my childhood. I love, that my parents handle it that way. No biggie.
AND... for 'intimacy' with your Husband.. .well, just go somewhere else in the house. That is what me and my Hubby do. No biggie.
all the best,
Susan