["I've long been married and living on my own, but my mom still cooks up delicious meals almost every night and invites me over to eat. I appreciate that more than she realizes.", 'Does she come over every day?', 'I usually go and visit her, but she does come over pretty often too. We have a close relationship. I really have a lot to thank her for.']
Maybe you should cook for her one night.
My mom is always cooking meals and inviting me over to her home to eat even after I've been married and already moved out. It's such a nice gesture and makes me feel great.