the greatest risk is ink drying inside the bladder and nib and causing difficulty to clean. i had a noodler’s ahab that i loved and after leaving ink in it for a couple weeks, it was sealed. i tried cleaning it out but only damaged parts in the process. (this is not a fault of the ahab- it is a great pen, but requires normal maintenance).
can’t speak to your specific pen, but i know that i either run my pens dry by using them within a week, or i completely clean them out and let them sit. there’s really not any in between if you want to keep everything working correctly.
sorry to hear about your mother. i’m sure it’s nice to write and remember her.