Hey guys

My GF suggested I ask you all about this since lots of you have probably had experience with it. My mom is 56 and hasn't had a checkup in several years. Anytime we try to approach her about it she just shrugs it off or says she'll get around to it eventually. She's had a persistent cough going on a few years now, and while it doesn't seem to be getting any worse, it's also not getting better. There's also a history of cancer in her family (two of her siblings died this year). What's a good way to convince her to go? I think trying to force it would just complicate things, but she really needs to go.