We did a full house renovation some years ago and it went really well.
Everything was fully priced.
Everything was fully on paper.
Our team were highly recommended and fully responsive.
The job hasn't begun and she isn't responding.
This is the best she is going to be.
This is where a tight contract is critical.
I would be asking for answers and pinning her to why she isn't answering and doesn't appear to adhering to the budget.
There are good architects out there but she doesn't sound like one.
I wouldn't allow anyone hang a shelf in my home without being highly recommended.
This has served me very well.
Start a paper trail now to prove the problems you are having with communication and start looking for someone else.
Clearly this is an enormous job of many hundreds of thousands.
Her incompetence could easily add a fortune to it.
Get ahead of this by also having every decision on fittings for the house picked out, lights, kitchen, bathroom, floors, handles, switches, colours, landscaping, the lot.
Having these comprehensively priced up, will give you a sense of the costs involved.
Those decisions come hard and fast, it really helps to know what you want.