Bereavement

I've been through loss of parents and had sibling issues.

I would just say from my experience grab the space you need. Be general, firm,
supportive, but do what is right for you. Tell her you need space, to just live
the grief and slow things down, that it will all look different to both of you in a
few months anyway, which it will. She may need attention, or fear being alone,
or think you're going to be closer now. But you've lived an adult lifetime apart
and you can't be like children again.

Peace, make time each day for your well being.