Yes or no?

I see an osteopath fairly regularly and his wife is the receptionist. Over a period of time my self and the receptionist have got quite chatty when I go there and she knows me immediately when I call up for appointments etc and we have a laugh.
Anyway. She is the sort of person that I would love to go for a coffee with or a drink one evening, but I feel awkward as this is a business situation and don’t want to overstep and make her feel awkward. She probably is v friendly with other patients, but I feel torn in what to do. Not often that I meet someone who I would like to be friends with. Hope this doesn’t sound weird, just needed to get an opinion.