Is my mum dropping hints she knows?

I'm not out to my parents. A few weeks ago my mum randomly brought up the idea of me getting vaccinated for HPV. In the UK it's normally only girls that have this done on the NHS, but my mum said she'd read an article in the newspaper that said that the fact guys aren't vaccinated means that they're at risk for various cancers etc. It's an odd thing to bring up, sure, but it possible that's all there is to it. But...The NHS officially recommends that MSMs are vaccinated for HPV because they don't get the "residual protection" that comes from only having sex with (vaccinated) women. Co-incidentally, they're just starting to make the vaccine available for free to MSMs at clinics.She's worked in healthcare much of her life, so it's entirely possible she's aware of the above (but equally plausible she isn't).She brought it up for a second time later, at the end of an episode of New Tricks (old people crime show) in which the plot revolved heavily around the victim being gay. (Maybe not so subtle there.)Based on this, do you think she's trying to tell me she knows? The situation is muddied by the fact she's said she's happy to pay for me to have it done privately (even though it will be becoming free soon) which will cost £300+. This puts me in the odd situation where coming out potentially will save my family money (I think it says something about me that that's one of the most convincing arguments I yet heard).In a way it's a good sign if she is saying what I think she is, because it shows she's being supportive and is aware of gay issues too. But based on some other thinks she's said (several times she's expressed admiration for Anne Widdecombe, a right-wing former politician who's very anti-gay) I wouldn't be so confident.