Do i invites to the bridal shower if they’ve already rsvp no to the wedding?

My mom and aunts are throwing me a bridal shower in July. I’ve been helping the with the guest list, really just with my friends and the bridal party. I have an old girlfriend from a previous job that we invited to the wedding but she rsvp no. Her and her husband have a vaca already planned out, she actually wrote a really sweet not on the back of the rsvp card explaining the situation. My question is do I still invite her to the shower even though she isn’t able to come to the wedding? Is that considered rude? Almost saying “hey I know you can’t come but still come to my shower and bring me a present”. Or is it rude to exclude her? I would love for her to be invited but I don’t know what is etiquette in this situation.