So if she asks, I'll say, I'm not s a car payment is what you needed right now, but if a new ride outweighed that, then you made a good decision. Enjoy! Nothing more, she will know all said in that short answer.
Hi Atlas, I don't know your whole story, but I think it's great that she is working her way back to you. If I can butt in, I'd like to suggest that you NOT say the part about the car payment right now, even if she asks. To me, this looks like a show of independence, like she wants to tell you that she can make a big decision on her own. If you say that about the car payment, she might think that you are assuming that she couldn't figure out what she can afford on her own. Maybe she has planned to cutback in other areas, or knows that she won't be paying rent since she'll be snuggled up with you in your home. I hope this helps. Teresa