I have to agree with Jeepcurlygurl - when you hit a certain age the number thing is really not important one way or another.

I say good for her to widen herself to enjoy male company as I know of plenty of women my age that really have given up on them forever.

Phone chit chat may be all she needs for company and even though she sounds like a wise women - if she was my mother - I would still keep an eye on things as scammers are very smart in hitting up the unexpected.