OP the chances are, if the council are coming to see you they've already been in her house with recording equipment to see if they can hear any noise from you.
This happened to my parents when they retired and moved to a new home.
Their new neighbour has a long history of making noise complaints, and she started before they even moved in.
She got them to one side and detailed her "ten years of hell" with various neighbours who previously lived in my parents new home and went on and on about how she hoped they would be quiet when they moved in.
After they moved it she kept telling them that she only uses her washing machine between certain hours, she doesn't play music or watch TV, she doesn't close her internal doors or flush her toilets after a certain time of day, and she was expecting them to agree to do the same.
Then she started leaving notes through their door every time they left the house, talking about how she's had a headache but she's risen from her sickbed to write a (long) note because she heard a noise from their home and it's gone right through her. The first time they were only gone for ten minutes so she must have been ready and waiting with the note.
And finally she had reported them to the council, who fitted recording equipment for a short time (not sure if it's a week or three weeks) in her house to see if it would pick anything up.
My parents found out because they came to their door at about 8am to ask if they could come in. They checked that my parents had carpets fitted, which they do, then said the only noise they could hear from all the time spent recording was about five minutes of scraping, which turned out to be my mum vacuuming the kitchen floor before mopping it one day.
Their neighbour had said it was a toddler driving a toy car across a wooden floor for a prolonged amount of time, but they have no wooden floors, no young children, and no toy cars. The noise was recorded on a day when my son wasn't visiting and he's the youngest in the family at 9 years old.
The council were unconcerned by my mother making brief noises because she was cleaning at 11am, and in the end they said that the neighbour makes a habit of this and that they were going to speak to her and say that in light of her many, many complaints over many many years, they were inviting her to apply to be rehoused elsewhere.
So far as we know she hasn't made another complaint.
I'm sure it will be fine when the council come to see you. You're not making the noise, nobody else can hear the noise, what can they do?