Oh LaCrepescule, I’m adding my hand to the many already reaching out to you. 💐
I think it's very understandable, must be the waiting and the fact that your mind has so much empty space to fill with frightening possibilities. But at this moment, you simply don’t know what the lump is. It is being investigated, and that is exactly what needs to happen.
Your daughter sounds wonderfully grounded, and I think there’s something to be said for following her lead and trying to take things one step at a time, rather than living through all the possible outcomes before you have any answers.
The fact that the specialist nurse was reassuring must surely be something you can hold onto too.
When your thoughts start running away with you, perhaps try bringing yourself back to what you actually know today: she is here, she is carrying on with her life, she has her scan booked, and you don't have the answer yet.
I hope the scan brings you both some reassuring news, and in the meantime, please be gentle with yourself. You don't have to hold everything together every minute. Sending you a very big handhold. 🤗💐