Dad advice needed, please!

[ChickJ]

I'm hoping for some advice as I'm struggling in my own thoughts at the moment.
I have a 9 year old daughter from a past relationship, she's my world. I see her every second weekend and we have a great relationship. I split from her mother about 7 years ago, and it's only ever been me & her since then.
Last year, I got into my first new relationship, and things have gone really well. We're now expecting a child due in November.
We're currently in the process of looking at places to live together as my current apartment is only 1 bedroom.
Lately, my daughter has expressed her nervousness about moving in with my new girlfriend. She said she likes her but she prefers when it's just me & her and got really upset when I spoke to her on the phone yesterday.
I assured her that it's fine to feel nervous, and it's normal when things are changing but reassured her how important she is to me and that it will never change. I offered to take her shopping to decorate her own room how she chooses once we move.
Once I had this conversation with my daughter, I informed my current partner and I didn't feel much empathy or care at all. She seemed to get very defensive, and if I'm being honest I don't feel as though she takes much interest in my daughter as it is, which is probably why my daughter feels anxious about it all. They have met a couple of times, and got along well.
How do I proceed? We viewed a house yesterday and it was perfect. I feel stuck in the middle and want to do right by everybody but really worried about my 9 year old daughter. Any help or advise is welcomed 🙏🏻

Your dd has some huge changes to come and must come first. Your partner needs to understand this and be on board with you becoming an inclusive family unit. Time to talk to your partner and make sure they understand how important empathy and understanding will be for your dd in the coming months. Make sure you dd has her own space in the new house that she can decorate too. Your partner needs to build a relationship with your dd and treat her as she would like her new child to be treated. Your dd has to be your priority.

Why have they only met a couple of times and why do you see your daughter so infrequently? You’re asking her to live with a stranger, it’s understandable she’s anxious. They need to start building a relationship now before you even think of asking your daughter to spend every other weekend in your new partners home. You also need to speak to your new partner it doesn’t sound like she has much interest in your daughter, she needs to be making more of an effort.

I've been trying to find the right balance of not overwhelming her with my partner, as I know she enjoys mine and her alone time so much. I've been with my partner a year and didn't want to introduce them to my daughter too soon.
I don't live too close to her, and she's at school mid week. On my weekend with her, I'll pick her up on Friday after school and drop her at school on Monday mornings.
I agree that her anxieties are understandable, which is why I'm trying to help manage them.