I waived off notice period of an employee as a manager and they got offended

One of my team members put in their resignation in June, with 4-6 weeks of notice period. As a manager, I reassigned their new tasks to other team members, asked them to complete ongoing tasks or onboard this and this person on the task so that there are no dependencies once they are gone.
Her notice period was July and first 2 weeks of aug. I knew that she will be free from any tasks and dependencies by first week of July, so i told her that her notice period has been waived off, she will get salary of notice period but she doesnt have to come in, she can stay home, enjoy the time off.
This offended her. She said that she was looking forward to coming to office for next 6 weeks, she cannot just spend time at home for this long. She had planned her farewells and spending last few days socialising with co workers etc.
Additionally, she said that she is feeling like she is being let go.
Personally i thought this was a good thing and she would be really happy to have free time.
Is this actually offensive to people if their notice period is waived off?