How to Calculate ds Pointer

I think you are confusing yourself somehow and mixing up file offsets with virtual offsets

lets try a simple example

open a random exe in windbg
patch the bytes in the current instruction Pointer
disassemble
subtract and look

explanation for commands below
cdb is console equivalent for windbg
-c is the command line to be passed to the debugger
eb . is enter bytes at the current instruction pointer (. (dot denotes current ip))
it is followed by bytes from your post

then I disassemble one single instruction at current ip using u . l1
I query what the current ip isby ? $ip
and quit

take the results and do the subtraction with python

C:\>cdb -c "eb . F2 0F 10 05 39 C6 01 00;u . l1;? $ip;q" cdb | f:\git\usr\bin\awk "/Reading/,/quit/"
0:000> cdb: Reading initial command 'eb . F2 0F 10 05 39 C6 01 00;u . l1;? $ip;q'
ntdll!LdrpDoDebuggerBreak+0x30:
00007ffc`69ad2dbc f20f100539c60100 movsd   xmm0,mmword ptr [xxx (00007ffc`69aef3fd)]
Evaluate expression: 140722081443260 = 00007ffc`69ad2dbc
quit:

C:\>python -c "print (hex(0x7ffc69aef3fd-(0x7ffc69ad2dbc+8)))"
0x1c639

rereading your posts it appears you have indeed mixed up raw offsets with virtual offsets
use 0x1a97 instead of 0xe97 (0xc00 bytes accounted for)
locate in which section your string is in
and add the difference between section Va and Section Pointer to RawData
I believe it would account for the remaining 0xa00 bytes