Condolences for your loss.

Tracking should show if she's received the parcel or not. 

Did you combine the order, or just put it all in the one parcel?

Has she opened a case yet?    Or just messaged you?

As for your negs.  There are 'only' 4.  I would reply to each one and apologise and say you suffered a bereavement in the family, and you will/have posted their items.

If you have posted them, and tracking shows they have been delivered - send the buyers a feedback revision and ask very nicely if they would change their feedback please.

As for the neutral, that doesn't affect your percentage.