"Since" with present tense??

Geniseta wrote:

Hello,  "She doesn't come to see us since her marriage."  What I think: The use of the present tense here is absolutely incorrect. We should say: "She hasn't come to see us since her marriage." Or at least: "She doesn’t come to see us now that she is married". But some persons argued that we CAN use the present tense, meaning she didn’t come anymore to see us after her marriage, she changed her habits...  What do you think, please? So as to make things clear once and for all. Thanks a lot.

I agree with you. The word 'since' should be used with a verb in the present perfect tense because it refers to the fact that her not coming to see us started since her marriage and has not ended.

She doesn’t come to see us now that she is married. I also agree this is correct English.

Thank you both.

I searched a bit more and found this in this book "How English Works" (Oxford):

"A present tense is sometimes used in the main clause to talk about changes. "
And they gave as an example: She looks quite different since her illness.

Is it a mistake? If not, is it natural for Native speakers to sometimes use "since" like that?

Wow, this is really new to me. So I had to wait for so long to know that!

Thanks a lot Clive. Very kind of you all to help this way.